1375781164 has 12 divisors (see below), whose sum is σ = 2409982288. Its totient is φ = 687214800.

The previous prime is 1375781161. The next prime is 1375781233. The reversal of 1375781164 is 4611875731.

It is a super-2 number, since 2×1375781164² = 3785547622434389792, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1375781164.

It is not an unprimeable number, because it can be changed into a prime (1375781161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164352 + ... + 172519.

Almost surely, 2^1375781164 is an apocalyptic number.

It is an amenable number.

1375781164 is a deficient number, since it is larger than the sum of its proper divisors (1034201124).

1375781164 is a wasteful number, since it uses less digits than its factorization.

1375781164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337896 (or 337894 counting only the distinct ones).

The product of its digits is 141120, while the sum is 43.

The square root of 1375781164 is about 37091.5241531000. The cubic root of 1375781164 is about 1112.2005864108.

The spelling of 1375781164 in words is "one billion, three hundred seventy-five million, seven hundred eighty-one thousand, one hundred sixty-four".