1385265764 has 6 divisors (see below), whose sum is σ = 2424215094. Its totient is φ = 692632880.

The previous prime is 1385265751. The next prime is 1385265787. The reversal of 1385265764 is 4675625831.

It can be written as a sum of positive squares in only one way, i.e., 1321904164 + 63361600 = 36358^2 + 7960^2 .

It is a super-2 number, since 2×1385265764² = 3837922473821007392, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 173158217 + ... + 173158224.

It is an arithmetic number, because the mean of its divisors is an integer number (404035849).

Almost surely, 2^1385265764 is an apocalyptic number.

It is an amenable number.

1385265764 is a deficient number, since it is larger than the sum of its proper divisors (1038949330).

1385265764 is a wasteful number, since it uses less digits than its factorization.

1385265764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346316445 (or 346316443 counting only the distinct ones).

The product of its digits is 1209600, while the sum is 47.

The square root of 1385265764 is about 37219.1585611497. The cubic root of 1385265764 is about 1114.7505629562.

The spelling of 1385265764 in words is "one billion, three hundred eighty-five million, two hundred sixty-five thousand, seven hundred sixty-four".