89792201538 has 90 divisors (see below), whose sum is σ = 217988955657. Its totient is φ = 27613113840.

The previous prime is 89792201537. The next prime is 89792201573. The reversal of 89792201538 is 83510229798.

89792201538 is a `hidden beast` number, since 89 + 7 + 9 + 2 + 20 + 1 + 538 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 76774988889 + 13017212649 = 277083^2 + 114093^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=211887.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (89792201537) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 49580653 + ... + 49582463.

Almost surely, 2^89792201538 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 89792201538

89792201538 is an abundant number, since it is smaller than the sum of its proper divisors (128196754119).

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

89792201538 is an equidigital number, since it uses as much as digits as its factorization.

89792201538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3662 (or 1829 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 54.

The spelling of 89792201538 in words is "eighty-nine billion, seven hundred ninety-two million, two hundred one thousand, five hundred thirty-eight".