2151343660 has 24 divisors (see below), whose sum is σ = 4518745056. Its totient is φ = 860361600.

The previous prime is 2151343639. The next prime is 2151343757. The reversal of 2151343660 is 663431512.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139704 + ... + 154336.

It is an arithmetic number, because the mean of its divisors is an integer number (188281044).

Almost surely, 2^2151343660 is an apocalyptic number.

2151343660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2151343660 is an abundant number, since it is smaller than the sum of its proper divisors (2367401396).

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

2151343660 is a wasteful number, since it uses less digits than its factorization.

2151343660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21993 (or 21991 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 2151343660 is about 46382.5792728261. The cubic root of 2151343660 is about 1290.9316947735.

The spelling of 2151343660 in words is "two billion, one hundred fifty-one million, three hundred forty-three thousand, six hundred sixty".