3881967628940 has 12 divisors (see below), whose sum is σ = 8152132020816. Its totient is φ = 1552787051568.

The previous prime is 3881967628939. The next prime is 3881967628961. The reversal of 3881967628940 is 498267691883.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97049190704 + ... + 97049190743.

It is an arithmetic number, because the mean of its divisors is an integer number (679344335068).

Almost surely, 2^{3881967628940} is an apocalyptic number.

It is an amenable number.

3881967628940 is an abundant number, since it is smaller than the sum of its proper divisors (4270164391876).

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

3881967628940 is a wasteful number, since it uses less digits than its factorization.

3881967628940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194098381456 (or 194098381454 counting only the distinct ones).

The product of its (nonzero) digits is 250822656, while the sum is 71.

The spelling of 3881967628940 in words is "three trillion, eight hundred eighty-one billion, nine hundred sixty-seven million, six hundred twenty-eight thousand, nine hundred forty".