16158137 has 4 divisors (see below), whose sum is σ = 16240356. Its totient is φ = 16075920.

The previous prime is 16158091. The next prime is 16158179. The reversal of 16158137 is 73185161.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 73185161 = 7 ⋅10455023.

It can be written as a sum of positive squares in 2 ways, for example, as 15912121 + 246016 = 3989^2 + 496^2 .

It is a cyclic number.

It is not a de Polignac number, because 16158137 - 2¹⁸ = 15895993 is a prime.

It is a super-2 number, since 2×16158137² = 522170782621538, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16158437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40814 + ... + 41207.

It is an arithmetic number, because the mean of its divisors is an integer number (4060089).

Almost surely, 2^16158137 is an apocalyptic number.

It is an amenable number.

16158137 is a deficient number, since it is larger than the sum of its proper divisors (82219).

16158137 is an equidigital number, since it uses as much as digits as its factorization.

16158137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82218.

The product of its digits is 5040, while the sum is 32.

The square root of 16158137 is about 4019.7185224839. The cubic root of 16158137 is about 252.8116571245.

The spelling of 16158137 in words is "sixteen million, one hundred fifty-eight thousand, one hundred thirty-seven".