1801955856960 has 168 divisors, whose sum is σ = 7083402745536. Its totient is φ = 411875619840.

The previous prime is 1801955856941. The next prime is 1801955856971. The reversal of 1801955856960 is 696585591081.

1801955856960 is a `hidden beast` number, since 1 + 8 + 0 + 1 + 9 + 5 + 5 + 8 + 569 + 60 = 666.

It is a tau number, because it is divible by the number of its divisors (168).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44671206 + ... + 44711525.

Almost surely, 2^{1801955856960} is an apocalyptic number.

1801955856960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1801955856960 is an abundant number, since it is smaller than the sum of its proper divisors (5281446888576).

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

1801955856960 is a wasteful number, since it uses less digits than its factorization.

1801955856960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89382761 (or 89382748 counting only the distinct ones).

The product of its (nonzero) digits is 23328000, while the sum is 63.

The spelling of 1801955856960 in words is "one trillion, eight hundred one billion, nine hundred fifty-five million, eight hundred fifty-six thousand, nine hundred sixty".