158919930 has 48 divisors (see below), whose sum is σ = 444979080. Its totient is φ = 39118464.

The previous prime is 158919911. The next prime is 158919983. The reversal of 158919930 is 39919851.

It can be written as a sum of positive squares in 4 ways, for example, as 85766121 + 73153809 = 9261^2 + 8553^2 .

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 66745 + ... + 69084.

Almost surely, 2^158919930 is an apocalyptic number.

158919930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

158919930 is an abundant number, since it is smaller than the sum of its proper divisors (286059150).

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

158919930 is a wasteful number, since it uses less digits than its factorization.

158919930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135855 (or 135852 counting only the distinct ones).

The product of its (nonzero) digits is 87480, while the sum is 45.

The square root of 158919930 is about 12606.3448310761. The cubic root of 158919930 is about 541.6591971620.

The spelling of 158919930 in words is "one hundred fifty-eight million, nine hundred nineteen thousand, nine hundred thirty".