3915489854 has 4 divisors (see below), whose sum is σ = 5873234784. Its totient is φ = 1957744926.

The previous prime is 3915489817. The next prime is 3915489869. The reversal of 3915489854 is 4589845193.

3915489854 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 3915489854.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 978872462 + ... + 978872465.

It is an arithmetic number, because the mean of its divisors is an integer number (1468308696).

Almost surely, 2^3915489854 is an apocalyptic number.

3915489854 is a deficient number, since it is larger than the sum of its proper divisors (1957744930).

3915489854 is a wasteful number, since it uses less digits than its factorization.

3915489854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1957744929.

The product of its digits is 6220800, while the sum is 56.

The square root of 3915489854 is about 62573.8751716721. The cubic root of 3915489854 is about 1576.1420931325.

The spelling of 3915489854 in words is "three billion, nine hundred fifteen million, four hundred eighty-nine thousand, eight hundred fifty-four".