158951920 has 20 divisors (see below), whose sum is σ = 369563400. Its totient is φ = 63580736.

The previous prime is 158951899. The next prime is 158951941. The reversal of 158951920 is 29159851.

It is an interprime number because it is at equal distance from previous prime (158951899) and next prime (158951941).

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (40).

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, 993370 + ... + 993529.

It is an arithmetic number, because the mean of its divisors is an integer number (18478170).

Almost surely, 2^158951920 is an apocalyptic number.

158951920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

158951920 is an abundant number, since it is smaller than the sum of its proper divisors (210611480).

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

158951920 is a wasteful number, since it uses less digits than its factorization.

158951920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1986912 (or 1986906 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 40.

The square root of 158951920 is about 12607.6135727583. The cubic root of 158951920 is about 541.6955393946.

The spelling of 158951920 in words is "one hundred fifty-eight million, nine hundred fifty-one thousand, nine hundred twenty".