3907981885 has 8 divisors (see below), whose sum is σ = 4691621376. Its totient is φ = 3125023440.

The previous prime is 3907981853. The next prime is 3907981919. The reversal of 3907981885 is 5881897093.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3907981885 - 2⁵ = 3907981853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 157549 + ... + 180658.

It is an arithmetic number, because the mean of its divisors is an integer number (586452672).

Almost surely, 2^3907981885 is an apocalyptic number.

It is an amenable number.

3907981885 is a deficient number, since it is larger than the sum of its proper divisors (783639491).

3907981885 is a wasteful number, since it uses less digits than its factorization.

3907981885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340523.

The product of its (nonzero) digits is 4354560, while the sum is 58.

The square root of 3907981885 is about 62513.8535446344. The cubic root of 3907981885 is about 1575.1340287386.

The spelling of 3907981885 in words is "three billion, nine hundred seven million, nine hundred eighty-one thousand, eight hundred eighty-five".