1369701989 has 2 divisors, whose sum is σ = 1369701990. Its totient is φ = 1369701988.

The previous prime is 1369701961. The next prime is 1369702013. The reversal of 1369701989 is 9891079631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1356669889 + 13032100 = 36833^2 + 3610^2 .

It is a cyclic number.

It is not a de Polignac number, because 1369701989 - 2⁸ = 1369701733 is a prime.

It is a super-2 number, since 2×1369701989² = 3752167077341112242, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1369701989.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1369701689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 684850994 + 684850995.

It is an arithmetic number, because the mean of its divisors is an integer number (684850995).

Almost surely, 2^1369701989 is an apocalyptic number.

It is an amenable number.

1369701989 is a deficient number, since it is larger than the sum of its proper divisors (1).

1369701989 is an equidigital number, since it uses as much as digits as its factorization.

1369701989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 734832, while the sum is 53.

The square root of 1369701989 is about 37009.4851220603. The cubic root of 1369701989 is about 1110.5600044693.

The spelling of 1369701989 in words is "one billion, three hundred sixty-nine million, seven hundred one thousand, nine hundred eighty-nine".