1390561382 has 8 divisors (see below), whose sum is σ = 2383819536. Its totient is φ = 595954872.

The previous prime is 1390561357. The next prime is 1390561387. The reversal of 1390561382 is 2831650931.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1390561387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49662893 + ... + 49662920.

It is an arithmetic number, because the mean of its divisors is an integer number (297977442).

Almost surely, 2^1390561382 is an apocalyptic number.

1390561382 is a deficient number, since it is larger than the sum of its proper divisors (993258154).

1390561382 is an equidigital number, since it uses as much as digits as its factorization.

1390561382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99325822.

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 1390561382 is about 37290.2317236029. The cubic root of 1390561382 is about 1116.1692526236.

The spelling of 1390561382 in words is "one billion, three hundred ninety million, five hundred sixty-one thousand, three hundred eighty-two".