434157138 has 16 divisors (see below), whose sum is σ = 964793760. Its totient is φ = 144719028.

The previous prime is 434157133. The next prime is 434157151. The reversal of 434157138 is 831751434.

It is a happy number.

434157138 is a `hidden beast` number, since 43 + 41 + 571 + 3 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (434157133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4019920 + ... + 4020027.

It is an arithmetic number, because the mean of its divisors is an integer number (60299610).

Almost surely, 2^434157138 is an apocalyptic number.

434157138 is an abundant number, since it is smaller than the sum of its proper divisors (530636622).

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

434157138 is a wasteful number, since it uses less digits than its factorization.

434157138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8039958 (or 8039952 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 434157138 is about 20836.4377473694. The cubic root of 434157138 is about 757.2087930745.

The spelling of 434157138 in words is "four hundred thirty-four million, one hundred fifty-seven thousand, one hundred thirty-eight".