345503018 has 12 divisors (see below), whose sum is σ = 602867682. Its totient is φ = 148072680.

The previous prime is 345503017. The next prime is 345503047. The reversal of 345503018 is 810305543.

It can be written as a sum of positive squares in only one way, i.e., 230948809 + 114554209 = 15197^2 + 10703^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (345503017) 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, 1762673 + ... + 1762868.

Almost surely, 2^345503018 is an apocalyptic number.

345503018 is a deficient number, since it is larger than the sum of its proper divisors (257364664).

345503018 is a wasteful number, since it uses less digits than its factorization.

345503018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3525557 (or 3525550 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 345503018 is about 18587.7114782859. The cubic root of 345503018 is about 701.6986081854.

The spelling of 345503018 in words is "three hundred forty-five million, five hundred three thousand, eighteen".