162158187 has 4 divisors (see below), whose sum is σ = 216210920. Its totient is φ = 108105456.

The previous prime is 162158149. The next prime is 162158197. The reversal of 162158187 is 781851261.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 781851261 = 3 ⋅260617087.

It is not a de Polignac number, because 162158187 - 2²⁶ = 95049323 is a prime.

It is a super-2 number, since 2×162158187² = 52590555222253938, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (162158197) 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, 27026362 + ... + 27026367.

It is an arithmetic number, because the mean of its divisors is an integer number (54052730).

Almost surely, 2^162158187 is an apocalyptic number.

162158187 is a deficient number, since it is larger than the sum of its proper divisors (54052733).

162158187 is an equidigital number, since it uses as much as digits as its factorization.

162158187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54052732.

The product of its digits is 26880, while the sum is 39.

The square root of 162158187 is about 12734.1347173650. The cubic root of 162158187 is about 545.3135552238.

The spelling of 162158187 in words is "one hundred sixty-two million, one hundred fifty-eight thousand, one hundred eighty-seven".