1390001515 has 16 divisors (see below), whose sum is σ = 2018423232. Its totient is φ = 897076224.

The previous prime is 1390001513. The next prime is 1390001537. The reversal of 1390001515 is 5151000931.

It is a cyclic number.

It is not a de Polignac number, because 1390001515 - 2¹ = 1390001513 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1390001515.

It is not an unprimeable number, because it can be changed into a prime (1390001513) 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, 1167474 + ... + 1168663.

It is an arithmetic number, because the mean of its divisors is an integer number (126151452).

Almost surely, 2^1390001515 is an apocalyptic number.

1390001515 is a deficient number, since it is larger than the sum of its proper divisors (628421717).

1390001515 is a wasteful number, since it uses less digits than its factorization.

1390001515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2336166.

The product of its (nonzero) digits is 675, while the sum is 25.

The square root of 1390001515 is about 37282.7240823414. The cubic root of 1390001515 is about 1116.0194353809.

The spelling of 1390001515 in words is "one billion, three hundred ninety million, one thousand, five hundred fifteen".