1881311040 has 168 divisors, whose sum is σ = 7395423360. Its totient is φ = 430009344.

The previous prime is 1881311009. The next prime is 1881311053. The reversal of 1881311040 is 401131881.

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

It is a junction number, because it is equal to n+sod(n) for n = 1881310995 and 1881311013.

It is a congruent number.

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, 26500 + ... + 66819.

Almost surely, 2^1881311040 is an apocalyptic number.

1881311040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1881311040 is an abundant number, since it is smaller than the sum of its proper divisors (5514112320).

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

1881311040 is a wasteful number, since it uses less digits than its factorization.

1881311040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93349 (or 93336 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 27.

The square root of 1881311040 is about 43374.0825839579. The cubic root of 1881311040 is about 1234.4879867649.

The spelling of 1881311040 in words is "one billion, eight hundred eighty-one million, three hundred eleven thousand, forty".