397134018 has 24 divisors (see below), whose sum is σ = 860827500. Its totient is φ = 132321024.

The previous prime is 397134011. The next prime is 397134037. The reversal of 397134018 is 810431793.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 346965129 + 50168889 = 18627^2 + 7083^2 .

It is not an unprimeable number, because it can be changed into a prime (397134011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 70158 + ... + 75606.

Almost surely, 2^397134018 is an apocalyptic number.

397134018 is an abundant number, since it is smaller than the sum of its proper divisors (463693482).

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

397134018 is a wasteful number, since it uses less digits than its factorization.

397134018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9506 (or 9503 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 397134018 is about 19928.2216466999. The cubic root of 397134018 is about 735.0423521340.

The spelling of 397134018 in words is "three hundred ninety-seven million, one hundred thirty-four thousand, eighteen".