158406532838 has 16 divisors (see below), whose sum is σ = 238670409120. Its totient is φ = 78849936000.

The previous prime is 158406532829. The next prime is 158406532847. The reversal of 158406532838 is 838235604851.

It is an interprime number because it is at equal distance from previous prime (158406532829) and next prime (158406532847).

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 158406532838.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1541303 + ... + 1640861.

It is an arithmetic number, because the mean of its divisors is an integer number (14916900570).

Almost surely, 2^158406532838 is an apocalyptic number.

158406532838 is a deficient number, since it is larger than the sum of its proper divisors (80263876282).

158406532838 is a wasteful number, since it uses less digits than its factorization.

158406532838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103103.

The product of its (nonzero) digits is 5529600, while the sum is 53.

The spelling of 158406532838 in words is "one hundred fifty-eight billion, four hundred six million, five hundred thirty-two thousand, eight hundred thirty-eight".