1391316790 has 32 divisors (see below), whose sum is σ = 2534688000. Its totient is φ = 549815904.

The previous prime is 1391316779. The next prime is 1391316791. The reversal of 1391316790 is 976131931.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1391316791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 512617 + ... + 515323.

It is an arithmetic number, because the mean of its divisors is an integer number (79209000).

Almost surely, 2^1391316790 is an apocalyptic number.

1391316790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1391316790 is a deficient number, since it is larger than the sum of its proper divisors (1143371210).

1391316790 is a wasteful number, since it uses less digits than its factorization.

1391316790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3316.

The product of its (nonzero) digits is 30618, while the sum is 40.

The square root of 1391316790 is about 37300.3591135528. The cubic root of 1391316790 is about 1116.3713318126.

It can be divided in two parts, 13913 and 16790, that added together give a palindrome (30703).

The spelling of 1391316790 in words is "one billion, three hundred ninety-one million, three hundred sixteen thousand, seven hundred ninety".