745404138 has 24 divisors (see below), whose sum is σ = 1616182308. Its totient is φ = 248292672.

The previous prime is 745404089. The next prime is 745404167. The reversal of 745404138 is 831404547.

745404138 is a `hidden beast` number, since 74 + 540 + 41 + 3 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 616876569 + 128527569 = 24837^2 + 11337^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13006 + ... + 40742.

Almost surely, 2^745404138 is an apocalyptic number.

745404138 is an abundant number, since it is smaller than the sum of its proper divisors (870778170).

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

745404138 is a wasteful number, since it uses less digits than its factorization.

745404138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29238 (or 29235 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

The square root of 745404138 is about 27302.0903595311. The cubic root of 745404138 is about 906.7006626226.

The spelling of 745404138 in words is "seven hundred forty-five million, four hundred four thousand, one hundred thirty-eight".