1689463332739 has 16 divisors (see below), whose sum is σ = 2090955928320. Its totient is φ = 1329250528800.

The previous prime is 1689463332737. The next prime is 1689463332757. The reversal of 1689463332739 is 9372333649861.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1689463332739 - 2¹ = 1689463332737 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1689463332737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51842737 + ... + 51875314.

It is an arithmetic number, because the mean of its divisors is an integer number (130684745520).

Almost surely, 2^{1689463332739} is an apocalyptic number.

1689463332739 is a deficient number, since it is larger than the sum of its proper divisors (401492595581).

1689463332739 is a wasteful number, since it uses less digits than its factorization.

1689463332739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103718250.

The product of its digits is 105815808, while the sum is 64.

It can be divided in two parts, 1689463 and 332739, that added together give a palindrome (2022202).

The spelling of 1689463332739 in words is "one trillion, six hundred eighty-nine billion, four hundred sixty-three million, three hundred thirty-two thousand, seven hundred thirty-nine".