158849640 has 64 divisors (see below), whose sum is σ = 529502400. Its totient is φ = 42359616.

The previous prime is 158849629. The next prime is 158849659. The reversal of 158849640 is 46948851.

158849640 is a `hidden beast` number, since 1 + 588 + 4 + 9 + 64 + 0 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72462 + ... + 74621.

It is an arithmetic number, because the mean of its divisors is an integer number (8273475).

Almost surely, 2^158849640 is an apocalyptic number.

158849640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

158849640 is an abundant number, since it is smaller than the sum of its proper divisors (370652760).

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

158849640 is a wasteful number, since it uses less digits than its factorization.

158849640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147103 (or 147093 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The square root of 158849640 is about 12603.5566408851. The cubic root of 158849640 is about 541.5793270882.

The spelling of 158849640 in words is "one hundred fifty-eight million, eight hundred forty-nine thousand, six hundred forty".