745407090438 has 32 divisors (see below), whose sum is σ = 1517332953600. Its totient is φ = 244056183456.

The previous prime is 745407090427. The next prime is 745407090443. The reversal of 745407090438 is 834090704547.

It is a super-2 number, since 2×745407090438² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 438558 + ... + 1297361.

It is an arithmetic number, because the mean of its divisors is an integer number (47416654800).

Almost surely, 2^745407090438 is an apocalyptic number.

745407090438 is an abundant number, since it is smaller than the sum of its proper divisors (771925863162).

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

745407090438 is a wasteful number, since it uses less digits than its factorization.

745407090438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1737196.

The product of its (nonzero) digits is 3386880, while the sum is 51.

The spelling of 745407090438 in words is "seven hundred forty-five billion, four hundred seven million, ninety thousand, four hundred thirty-eight".