1385893465 has 72 divisors (see below), whose sum is σ = 2010011976. Its totient is φ = 913228800.

The previous prime is 1385893447. The next prime is 1385893489. The reversal of 1385893465 is 5643985831.

It can be written as a sum of positive squares in 4 ways, for example, as 38489616 + 1347403849 = 6204^2 + 36707^2 .

It is not a de Polignac number, because 1385893465 - 2¹⁷ = 1385762393 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 22719535 + ... + 22719595.

It is an arithmetic number, because the mean of its divisors is an integer number (27916833).

Almost surely, 2^1385893465 is an apocalyptic number.

It is an amenable number.

1385893465 is a deficient number, since it is larger than the sum of its proper divisors (624118511).

1385893465 is a wasteful number, since it uses less digits than its factorization.

1385893465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199 (or 141 counting only the distinct ones).

The product of its digits is 3110400, while the sum is 52.

The square root of 1385893465 is about 37227.5901046522. The cubic root of 1385893465 is about 1114.9189119712.

The spelling of 1385893465 in words is "one billion, three hundred eighty-five million, eight hundred ninety-three thousand, four hundred sixty-five".