90452709738 has 12 divisors (see below), whose sum is σ = 195980871138. Its totient is φ = 30150903240.

The previous prime is 90452709731. The next prime is 90452709857. The reversal of 90452709738 is 83790725409.

90452709738 is a `hidden beast` number, since 9 + 0 + 452 + 70 + 97 + 38 = 666.

It can be written as a sum of positive squares in only one way, i.e., 61507472049 + 28945237689 = 248007^2 + 170133^2 .

It is not an unprimeable number, because it can be changed into a prime (90452709731) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 2512575253 + ... + 2512575288.

Almost surely, 2^90452709738 is an apocalyptic number.

90452709738 is an abundant number, since it is smaller than the sum of its proper divisors (105528161400).

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

90452709738 is a wasteful number, since it uses less digits than its factorization.

90452709738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5025150549 (or 5025150546 counting only the distinct ones).

The product of its (nonzero) digits is 3810240, while the sum is 54.

The spelling of 90452709738 in words is "ninety billion, four hundred fifty-two million, seven hundred nine thousand, seven hundred thirty-eight".