158621834 has 16 divisors (see below), whose sum is σ = 272911488. Its totient is φ = 67733712.

The previous prime is 158621833. The next prime is 158621873. The reversal of 158621834 is 438126851.

It is not an unprimeable number, because it can be changed into a prime (158621831) 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 7 ways as a sum of consecutive naturals, for example, 16574 + ... + 24329.

It is an arithmetic number, because the mean of its divisors is an integer number (17056968).

Almost surely, 2^158621834 is an apocalyptic number.

158621834 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

158621834 is a deficient number, since it is larger than the sum of its proper divisors (114289654).

158621834 is a wasteful number, since it uses less digits than its factorization.

158621834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41189.

The product of its digits is 46080, while the sum is 38.

The square root of 158621834 is about 12594.5160288119. The cubic root of 158621834 is about 541.3203105647.

The spelling of 158621834 in words is "one hundred fifty-eight million, six hundred twenty-one thousand, eight hundred thirty-four".