158120538 has 16 divisors (see below), whose sum is σ = 329990976. Its totient is φ = 50415200.

The previous prime is 158120507. The next prime is 158120563. The reversal of 158120538 is 835021851.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 158120499 and 158120508.

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, 572763 + ... + 573038.

It is an arithmetic number, because the mean of its divisors is an integer number (20624436).

Almost surely, 2^158120538 is an apocalyptic number.

158120538 is an abundant number, since it is smaller than the sum of its proper divisors (171870438).

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

158120538 is a wasteful number, since it uses less digits than its factorization.

158120538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1145829.

The product of its (nonzero) digits is 9600, while the sum is 33.

The square root of 158120538 is about 12574.5989200451. The cubic root of 158120538 is about 540.7494600373.

The spelling of 158120538 in words is "one hundred fifty-eight million, one hundred twenty thousand, five hundred thirty-eight".