2154695860 has 48 divisors (see below), whose sum is σ = 4570074432. Its totient is φ = 853299200.

The previous prime is 2154695839. The next prime is 2154695897. The reversal of 2154695860 is 685964512.

It is a super-2 number, since 2×2154695860² = 9285428498202279200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2154695860.

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, 1678779 + ... + 1680061.

It is an arithmetic number, because the mean of its divisors is an integer number (95209884).

Almost surely, 2^2154695860 is an apocalyptic number.

2154695860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2154695860 is an abundant number, since it is smaller than the sum of its proper divisors (2415378572).

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

2154695860 is a wasteful number, since it uses less digits than its factorization.

2154695860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2064 (or 2062 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 46.

The square root of 2154695860 is about 46418.7016190673. The cubic root of 2154695860 is about 1291.6018520003.

The spelling of 2154695860 in words is "two billion, one hundred fifty-four million, six hundred ninety-five thousand, eight hundred sixty".