158749540 has 24 divisors (see below), whose sum is σ = 341506872. Its totient is φ = 61950720.

The previous prime is 158749529. The next prime is 158749559. The reversal of 158749540 is 45947851.

158749540 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1196836 + 157552704 = 1094^2 + 12552^2 .

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, 95979 + ... + 97618.

It is an arithmetic number, because the mean of its divisors is an integer number (14229453).

Almost surely, 2^158749540 is an apocalyptic number.

158749540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

158749540 is an abundant number, since it is smaller than the sum of its proper divisors (182757332).

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

158749540 is a wasteful number, since it uses less digits than its factorization.

158749540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193647 (or 193645 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 43.

The square root of 158749540 is about 12599.5849137978. The cubic root of 158749540 is about 541.4655434246.

The spelling of 158749540 in words is "one hundred fifty-eight million, seven hundred forty-nine thousand, five hundred forty".