158840370738 has 64 divisors (see below), whose sum is σ = 407398314240. Its totient is φ = 44933616000.

The previous prime is 158840370719. The next prime is 158840370743. The reversal of 158840370738 is 837073048851.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2042083 + ... + 2118438.

It is an arithmetic number, because the mean of its divisors is an integer number (6365598660).

Almost surely, 2^158840370738 is an apocalyptic number.

158840370738 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

158840370738 is an abundant number, since it is smaller than the sum of its proper divisors (248557943502).

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

158840370738 is a wasteful number, since it uses less digits than its factorization.

158840370738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4160640 (or 4160634 counting only the distinct ones).

The product of its (nonzero) digits is 4515840, while the sum is 54.

The spelling of 158840370738 in words is "one hundred fifty-eight billion, eight hundred forty million, three hundred seventy thousand, seven hundred thirty-eight".