1660241172 has 12 divisors (see below), whose sum is σ = 3873896096. Its totient is φ = 553413720.

The previous prime is 1660241153. The next prime is 1660241189. The reversal of 1660241172 is 2711420661.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69176704 + ... + 69176727.

Almost surely, 2^1660241172 is an apocalyptic number.

1660241172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1660241172 is an abundant number, since it is smaller than the sum of its proper divisors (2213654924).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1660241172 is a wasteful number, since it uses less digits than its factorization.

1660241172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138353438 (or 138353436 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 1660241172 is about 40746.0571344026. The cubic root of 1660241172 is about 1184.1054859830.

The spelling of 1660241172 in words is "one billion, six hundred sixty million, two hundred forty-one thousand, one hundred seventy-two".