1390374985 has 32 divisors (see below), whose sum is σ = 1776660480. Its totient is φ = 1042675200.

The previous prime is 1390374967. The next prime is 1390375111. The reversal of 1390374985 is 5894730931.

It is not a de Polignac number, because 1390374985 - 2¹³ = 1390366793 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1610664 + ... + 1611526.

It is an arithmetic number, because the mean of its divisors is an integer number (55520640).

Almost surely, 2^1390374985 is an apocalyptic number.

It is an amenable number.

1390374985 is a deficient number, since it is larger than the sum of its proper divisors (386285495).

1390374985 is a wasteful number, since it uses less digits than its factorization.

1390374985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1209.

The product of its (nonzero) digits is 816480, while the sum is 49.

The square root of 1390374985 is about 37287.7323660209. The cubic root of 1390374985 is about 1116.1193783068.

It can be divided in two parts, 13903 and 74985, that added together give a palindrome (88888).

The spelling of 1390374985 in words is "one billion, three hundred ninety million, three hundred seventy-four thousand, nine hundred eighty-five".