16158091 has 2 divisors, whose sum is σ = 16158092. Its totient is φ = 16158090.

The previous prime is 16158061. The next prime is 16158179. The reversal of 16158091 is 19085161.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16158091 - 2⁹ = 16157579 is a prime.

It is a super-2 number, since 2×16158091² = 522167809528562, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16158001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8079045 + 8079046.

It is an arithmetic number, because the mean of its divisors is an integer number (8079046).

Almost surely, 2^16158091 is an apocalyptic number.

16158091 is a deficient number, since it is larger than the sum of its proper divisors (1).

16158091 is an equidigital number, since it uses as much as digits as its factorization.

16158091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 31.

The square root of 16158091 is about 4019.7128006861. The cubic root of 16158091 is about 252.8114172176.

The spelling of 16158091 in words is "sixteen million, one hundred fifty-eight thousand, ninety-one".