145770518 has 4 divisors (see below), whose sum is σ = 218655780. Its totient is φ = 72885258.

The previous prime is 145770517. The next prime is 145770553. The reversal of 145770518 is 815077541.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145770517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36442628 + ... + 36442631.

It is an arithmetic number, because the mean of its divisors is an integer number (54663945).

Almost surely, 2^145770518 is an apocalyptic number.

145770518 is a deficient number, since it is larger than the sum of its proper divisors (72885262).

145770518 is an equidigital number, since it uses as much as digits as its factorization.

145770518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72885261.

The product of its (nonzero) digits is 39200, while the sum is 38.

The square root of 145770518 is about 12073.5462064797. The cubic root of 145770518 is about 526.2877148116.

The spelling of 145770518 in words is "one hundred forty-five million, seven hundred seventy thousand, five hundred eighteen".