1375216664 has 16 divisors (see below), whose sum is σ = 2583921600. Its totient is φ = 686170912.

The previous prime is 1375216657. The next prime is 1375216681. The reversal of 1375216664 is 4666125731.

It is a congruent number.

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, 175607 + ... + 183270.

It is an arithmetic number, because the mean of its divisors is an integer number (161495100).

Almost surely, 2^1375216664 is an apocalyptic number.

It is an amenable number.

1375216664 is a deficient number, since it is larger than the sum of its proper divisors (1208704936).

1375216664 is a wasteful number, since it uses less digits than its factorization.

1375216664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359362 (or 359358 counting only the distinct ones).

The product of its digits is 181440, while the sum is 41.

The square root of 1375216664 is about 37083.9138171795. The cubic root of 1375216664 is about 1112.0484490562.

The spelling of 1375216664 in words is "one billion, three hundred seventy-five million, two hundred sixteen thousand, six hundred sixty-four".