145218708 has 18 divisors (see below), whose sum is σ = 367080714. Its totient is φ = 48406224.

The previous prime is 145218707. The next prime is 145218737. The reversal of 145218708 is 807812541.

145218708 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 106131204 + 39087504 = 10302^2 + 6252^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 4033853 = 145218708 / (1 + 4 + 5 + 2 + 1 + 8 + 7 + 0 + 8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145218701) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2016891 + ... + 2016962.

It is an arithmetic number, because the mean of its divisors is an integer number (20393373).

Almost surely, 2^145218708 is an apocalyptic number.

145218708 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

145218708 is an abundant number, since it is smaller than the sum of its proper divisors (221862006).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

145218708 is a wasteful number, since it uses less digits than its factorization.

145218708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4033863 (or 4033858 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 36.

The square root of 145218708 is about 12050.6725123538. The cubic root of 145218708 is about 525.6227928788.

The spelling of 145218708 in words is "one hundred forty-five million, two hundred eighteen thousand, seven hundred eight".