3888952978 has 8 divisors (see below), whose sum is σ = 5847286860. Its totient is φ = 1939857360.

The previous prime is 3888952943. The next prime is 3888952993. The reversal of 3888952978 is 8792598883.

It can be written as a sum of positive squares in 2 ways, for example, as 3138576529 + 750376449 = 56023^2 + 27393^2 .

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

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, 2308513 + ... + 2310196.

Almost surely, 2^3888952978 is an apocalyptic number.

3888952978 is a deficient number, since it is larger than the sum of its proper divisors (1958333882).

3888952978 is a wasteful number, since it uses less digits than its factorization.

3888952978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4619132.

The product of its digits is 69672960, while the sum is 67.

The square root of 3888952978 is about 62361.4703001781. The cubic root of 3888952978 is about 1572.5732987099.

The spelling of 3888952978 in words is "three billion, eight hundred eighty-eight million, nine hundred fifty-two thousand, nine hundred seventy-eight".