172163146 has 16 divisors (see below), whose sum is σ = 266107464. Its totient is φ = 83476224.

The previous prime is 172163137. The next prime is 172163149. The reversal of 172163146 is 641361271.

It can be written as a sum of positive squares in 4 ways, for example, as 85766121 + 86397025 = 9261^2 + 9295^2 .

It is not an unprimeable number, because it can be changed into a prime (172163149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19446 + ... + 26878.

Almost surely, 2^172163146 is an apocalyptic number.

172163146 is a deficient number, since it is larger than the sum of its proper divisors (93944318).

172163146 is a wasteful number, since it uses less digits than its factorization.

172163146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7785.

The product of its digits is 6048, while the sum is 31.

The square root of 172163146 is about 13121.0954573161. The cubic root of 172163146 is about 556.3055550960.

The spelling of 172163146 in words is "one hundred seventy-two million, one hundred sixty-three thousand, one hundred forty-six".