1378585365 has 8 divisors (see below), whose sum is σ = 2205736608. Its totient is φ = 735245520.

The previous prime is 1378585357. The next prime is 1378585387. The reversal of 1378585365 is 5635858731.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1378585365 - 2³ = 1378585357 is a prime.

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, 45952831 + ... + 45952860.

It is an arithmetic number, because the mean of its divisors is an integer number (275717076).

Almost surely, 2^1378585365 is an apocalyptic number.

1378585365 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1378585365 is a deficient number, since it is larger than the sum of its proper divisors (827151243).

1378585365 is an equidigital number, since it uses as much as digits as its factorization.

1378585365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91905699.

The product of its digits is 3024000, while the sum is 51.

The square root of 1378585365 is about 37129.3060129058. The cubic root of 1378585365 is about 1112.9557252549.

The spelling of 1378585365 in words is "one billion, three hundred seventy-eight million, five hundred eighty-five thousand, three hundred sixty-five".