1375382566 has 16 divisors (see below), whose sum is σ = 2184908544. Its totient is φ = 647972424.

The previous prime is 1375382521. The next prime is 1375382599. The reversal of 1375382566 is 6652835731.

It is a Harshad number since it is a multiple of its sum of digits (46).

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, 220050 + ... + 226213.

It is an arithmetic number, because the mean of its divisors is an integer number (136556784).

Almost surely, 2^1375382566 is an apocalyptic number.

1375382566 is a deficient number, since it is larger than the sum of its proper divisors (809525978).

1375382566 is a wasteful number, since it uses less digits than its factorization.

1375382566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446355.

The product of its digits is 907200, while the sum is 46.

The square root of 1375382566 is about 37086.1505956064. The cubic root of 1375382566 is about 1112.0931653176.

The spelling of 1375382566 in words is "one billion, three hundred seventy-five million, three hundred eighty-two thousand, five hundred sixty-six".