158021458 has 16 divisors (see below), whose sum is σ = 273939840. Its totient is φ = 66962016.

The previous prime is 158021453. The next prime is 158021471. The reversal of 158021458 is 854120851.

It is not an unprimeable number, because it can be changed into a prime (158021453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62166 + ... + 64657.

It is an arithmetic number, because the mean of its divisors is an integer number (17121240).

Almost surely, 2^158021458 is an apocalyptic number.

158021458 is a deficient number, since it is larger than the sum of its proper divisors (115918382).

158021458 is a wasteful number, since it uses less digits than its factorization.

158021458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126921.

The product of its (nonzero) digits is 12800, while the sum is 34.

The square root of 158021458 is about 12570.6586144084. The cubic root of 158021458 is about 540.6364899960.

The spelling of 158021458 in words is "one hundred fifty-eight million, twenty-one thousand, four hundred fifty-eight".