158132257938 has 90 divisors (see below), whose sum is σ = 358405656741. Its totient is φ = 52111824336.

The previous prime is 158132257919. The next prime is 158132257967. The reversal of 158132257938 is 839752231851.

158132257938 is a `hidden beast` number, since 1 + 5 + 8 + 1 + 32 + 2 + 579 + 38 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 151046490609 + 7085767329 = 388647^2 + 84177^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=281187.

It is a super-2 number, since 2×158132257938² (a number of 23 digits) contains 22 as substring.

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 794634363 + ... + 794634561.

Almost surely, 2^158132257938 is an apocalyptic number.

158132257938 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 158132257938

158132257938 is an abundant number, since it is smaller than the sum of its proper divisors (200273398803).

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

158132257938 is an frugal number, since it uses more digits than its factorization.

158132257938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 726 (or 361 counting only the distinct ones).

The product of its digits is 3628800, while the sum is 54.

The spelling of 158132257938 in words is "one hundred fifty-eight billion, one hundred thirty-two million, two hundred fifty-seven thousand, nine hundred thirty-eight".