1390134887523 has 12 divisors (see below), whose sum is σ = 2036253920688. Its totient is φ = 913703681520.

The previous prime is 1390134887503. The next prime is 1390134887567. The reversal of 1390134887523 is 3257884310931.

1390134887523 is a `hidden beast` number, since 1 + 3 + 9 + 0 + 1 + 34 + 8 + 87 + 523 = 666.

It is not a de Polignac number, because 1390134887523 - 2¹⁸ = 1390134625379 is a prime.

It is a super-2 number, since 2×1390134887523² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1390134887523.

It is not an unprimeable number, because it can be changed into a prime (1390134887503) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1087741840 + ... + 1087743117.

It is an arithmetic number, because the mean of its divisors is an integer number (169687826724).

Almost surely, 2^{1390134887523} is an apocalyptic number.

1390134887523 is a deficient number, since it is larger than the sum of its proper divisors (646119033165).

1390134887523 is a wasteful number, since it uses less digits than its factorization.

1390134887523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2175485034 (or 2175485031 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 54.

The spelling of 1390134887523 in words is "one trillion, three hundred ninety billion, one hundred thirty-four million, eight hundred eighty-seven thousand, five hundred twenty-three".