1390862137 has 8 divisors (see below), whose sum is σ = 1594637696. Its totient is φ = 1188356832.

The previous prime is 1390862131. The next prime is 1390862171. The reversal of 1390862137 is 7312680931.

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

It is a cyclic number.

It is not a de Polignac number, because 1390862137 - 2³ = 1390862129 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1390862137.

It is not an unprimeable number, because it can be changed into a prime (1390862131) 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 7 ways as a sum of consecutive naturals, for example, 315213 + ... + 319594.

It is an arithmetic number, because the mean of its divisors is an integer number (199329712).

Almost surely, 2^1390862137 is an apocalyptic number.

It is an amenable number.

1390862137 is a deficient number, since it is larger than the sum of its proper divisors (203775559).

1390862137 is an equidigital number, since it uses as much as digits as its factorization.

1390862137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635127.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 1390862137 is about 37294.2641300241. The cubic root of 1390862137 is about 1116.2497163580.

The spelling of 1390862137 in words is "one billion, three hundred ninety million, eight hundred sixty-two thousand, one hundred thirty-seven".