158016631 has 2 divisors, whose sum is σ = 158016632. Its totient is φ = 158016630.

The previous prime is 158016629. The next prime is 158016653. The reversal of 158016631 is 136610851.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 158016631 - 2¹ = 158016629 is a prime.

It is a super-2 number, since 2×158016631² = 49938511345180322, which contains 22 as substring.

Together with 158016629, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 158016593 and 158016602.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (158016611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79008315 + 79008316.

It is an arithmetic number, because the mean of its divisors is an integer number (79008316).

Almost surely, 2^158016631 is an apocalyptic number.

158016631 is a deficient number, since it is larger than the sum of its proper divisors (1).

158016631 is an equidigital number, since it uses as much as digits as its factorization.

158016631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 158016631 is about 12570.4666182286. The cubic root of 158016631 is about 540.6309850919.

The spelling of 158016631 in words is "one hundred fifty-eight million, sixteen thousand, six hundred thirty-one".