162972146 has 12 divisors (see below), whose sum is σ = 252601326. Its totient is φ = 78856560.

The previous prime is 162972143. The next prime is 162972157. The reversal of 162972146 is 641279261.

It can be written as a sum of positive squares in only one way, i.e., 105288121 + 57684025 = 10261^2 + 7595^2 .

It is not an unprimeable number, because it can be changed into a prime (162972143) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 40475 + ... + 44318.

Almost surely, 2^162972146 is an apocalyptic number.

162972146 is a deficient number, since it is larger than the sum of its proper divisors (89629180).

162972146 is an equidigital number, since it uses as much as digits as its factorization.

162972146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84857 (or 84826 counting only the distinct ones).

The product of its digits is 36288, while the sum is 38.

The square root of 162972146 is about 12766.0544413691. The cubic root of 162972146 is about 546.2244400135.

The spelling of 162972146 in words is "one hundred sixty-two million, nine hundred seventy-two thousand, one hundred forty-six".