145618770 has 128 divisors (see below), whose sum is σ = 409266432. Its totient is φ = 32768000.

The previous prime is 145618751. The next prime is 145618783. The reversal of 145618770 is 77816541.

145618770 = T₂₁ + T₂₂ + ... + T₉₅₅.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 566482 + ... + 566738.

It is an arithmetic number, because the mean of its divisors is an integer number (3197394).

Almost surely, 2^145618770 is an apocalyptic number.

145618770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 145618770, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (204633216).

145618770 is an abundant number, since it is smaller than the sum of its proper divisors (263647662).

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

145618770 is a wasteful number, since it uses less digits than its factorization.

145618770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396.

The product of its (nonzero) digits is 47040, while the sum is 39.

The square root of 145618770 is about 12067.2602524351. The cubic root of 145618770 is about 526.1050284954.

The spelling of 145618770 in words is "one hundred forty-five million, six hundred eighteen thousand, seven hundred seventy".