158868290 has 48 divisors (see below), whose sum is σ = 333963000. Its totient is φ = 54254592.

The previous prime is 158868287. The next prime is 158868299. The reversal of 158868290 is 92868851.

It can be written as a sum of positive squares in 4 ways, for example, as 98386561 + 60481729 = 9919^2 + 7777^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (158868299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 170546 + ... + 171474.

Almost surely, 2^158868290 is an apocalyptic number.

158868290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

158868290 is an abundant number, since it is smaller than the sum of its proper divisors (175094710).

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

158868290 is a wasteful number, since it uses less digits than its factorization.

158868290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1299 (or 1292 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 47.

The square root of 158868290 is about 12604.2964896895. The cubic root of 158868290 is about 541.6005212590.

The spelling of 158868290 in words is "one hundred fifty-eight million, eight hundred sixty-eight thousand, two hundred ninety".