1390165539 has 32 divisors (see below), whose sum is σ = 2159671296. Its totient is φ = 778965120.

The previous prime is 1390165537. The next prime is 1390165561. The reversal of 1390165539 is 9355610931.

It is not a de Polignac number, because 1390165539 - 2¹ = 1390165537 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1390165539.

It is not an unprimeable number, because it can be changed into a prime (1390165537) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 468649 + ... + 471605.

It is an arithmetic number, because the mean of its divisors is an integer number (67489728).

Almost surely, 2^1390165539 is an apocalyptic number.

1390165539 is a deficient number, since it is larger than the sum of its proper divisors (769505757).

1390165539 is a wasteful number, since it uses less digits than its factorization.

1390165539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3395.

The product of its (nonzero) digits is 109350, while the sum is 42.

The square root of 1390165539 is about 37284.9237494191. The cubic root of 1390165539 is about 1116.0633314415.

The spelling of 1390165539 in words is "one billion, three hundred ninety million, one hundred sixty-five thousand, five hundred thirty-nine".