3915493388 has 6 divisors (see below), whose sum is σ = 6852113436. Its totient is φ = 1957746692.

The previous prime is 3915493357. The next prime is 3915493391. The reversal of 3915493388 is 8833945193.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 489436670 + ... + 489436677.

It is an arithmetic number, because the mean of its divisors is an integer number (1142018906).

Almost surely, 2^3915493388 is an apocalyptic number.

It is an amenable number.

3915493388 is a deficient number, since it is larger than the sum of its proper divisors (2936620048).

3915493388 is a wasteful number, since it uses less digits than its factorization.

3915493388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 978873351 (or 978873349 counting only the distinct ones).

The product of its digits is 2799360, while the sum is 53.

The square root of 3915493388 is about 62573.9034102876. The cubic root of 3915493388 is about 1576.1425673247.

The spelling of 3915493388 in words is "three billion, nine hundred fifteen million, four hundred ninety-three thousand, three hundred eighty-eight".