197345018 has 12 divisors (see below), whose sum is σ = 320540238. Its totient is φ = 91082160.

The previous prime is 197344981. The next prime is 197345021. The reversal of 197345018 is 810543791.

It can be written as a sum of positive squares in 3 ways, for example, as 37246609 + 160098409 = 6103^2 + 12653^2 .

It is a super-2 number, since 2×197345018² = 77890112258840648, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 291593 + ... + 292268.

Almost surely, 2^197345018 is an apocalyptic number.

197345018 is a deficient number, since it is larger than the sum of its proper divisors (123195220).

197345018 is a wasteful number, since it uses less digits than its factorization.

197345018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 583889 (or 583876 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 197345018 is about 14047.9542282853. The cubic root of 197345018 is about 582.2042736219.

The spelling of 197345018 in words is "one hundred ninety-seven million, three hundred forty-five thousand, eighteen".