172886001890 has 16 divisors (see below), whose sum is σ = 355651204032. Its totient is φ = 59275200624.

The previous prime is 172886001877. The next prime is 172886001901. The reversal of 172886001890 is 98100688271.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1234899944 + ... + 1234900083.

It is an arithmetic number, because the mean of its divisors is an integer number (22228200252).

Almost surely, 2^172886001890 is an apocalyptic number.

172886001890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

172886001890 is an abundant number, since it is smaller than the sum of its proper divisors (182765202142).

172886001890 is a wasteful number, since it uses less digits than its factorization.

172886001890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2469800041.

The product of its (nonzero) digits is 387072, while the sum is 50.

The spelling of 172886001890 in words is "one hundred seventy-two billion, eight hundred eighty-six million, one thousand, eight hundred ninety".