1660893870 has 32 divisors (see below), whose sum is σ = 3987495072. Its totient is φ = 442755072.

The previous prime is 1660893869. The next prime is 1660893901. The reversal of 1660893870 is 783980661.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102654 + ... + 117726.

It is an arithmetic number, because the mean of its divisors is an integer number (124609221).

Almost surely, 2^1660893870 is an apocalyptic number.

1660893870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1660893870 is an abundant number, since it is smaller than the sum of its proper divisors (2326601202).

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

1660893870 is a wasteful number, since it uses less digits than its factorization.

1660893870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18756.

The product of its (nonzero) digits is 435456, while the sum is 48.

The square root of 1660893870 is about 40754.0656867508. The cubic root of 1660893870 is about 1184.2606365394.

The spelling of 1660893870 in words is "one billion, six hundred sixty million, eight hundred ninety-three thousand, eight hundred seventy".