158901620 has 12 divisors (see below), whose sum is σ = 333693444. Its totient is φ = 63560640.

The previous prime is 158901619. The next prime is 158901637. The reversal of 158901620 is 26109851.

158901620 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 59660176 + 99241444 = 7724^2 + 9962^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3972521 + ... + 3972560.

It is an arithmetic number, because the mean of its divisors is an integer number (27807787).

Almost surely, 2^158901620 is an apocalyptic number.

158901620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

158901620 is an abundant number, since it is smaller than the sum of its proper divisors (174791824).

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

158901620 is a wasteful number, since it uses less digits than its factorization.

158901620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7945090 (or 7945088 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 32.

The square root of 158901620 is about 12605.6185885501. The cubic root of 158901620 is about 541.6383938958.

The spelling of 158901620 in words is "one hundred fifty-eight million, nine hundred one thousand, six hundred twenty".