1390918286 has 8 divisors (see below), whose sum is σ = 2086621680. Its totient is φ = 695377728.

The previous prime is 1390918253. The next prime is 1390918339. The reversal of 1390918286 is 6828190931.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1390918286.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16466 + ... + 55253.

It is an arithmetic number, because the mean of its divisors is an integer number (260827710).

Almost surely, 2^1390918286 is an apocalyptic number.

1390918286 is a deficient number, since it is larger than the sum of its proper divisors (695703394).

1390918286 is an equidigital number, since it uses as much as digits as its factorization.

1390918286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81418.

The product of its (nonzero) digits is 186624, while the sum is 47.

The square root of 1390918286 is about 37295.0169057476. The cubic root of 1390918286 is about 1116.2647371282.

The spelling of 1390918286 in words is "one billion, three hundred ninety million, nine hundred eighteen thousand, two hundred eighty-six".