1366980659 has 32 divisors (see below), whose sum is σ = 1614271680. Its totient is φ = 1143705600.

The previous prime is 1366980647. The next prime is 1366980691. The reversal of 1366980659 is 9560896631.

It is not a de Polignac number, because 1366980659 - 2²⁴ = 1350203443 is a prime.

It is a super-2 number, since 2×1366980659² = 3737272244160148562, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1366980659.

It is not an unprimeable number, because it can be changed into a prime (1366950659) 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, 3342047 + ... + 3342455.

It is an arithmetic number, because the mean of its divisors is an integer number (50445990).

Almost surely, 2^1366980659 is an apocalyptic number.

1366980659 is a deficient number, since it is larger than the sum of its proper divisors (247291021).

1366980659 is a wasteful number, since it uses less digits than its factorization.

1366980659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 791.

The product of its (nonzero) digits is 2099520, while the sum is 53.

The square root of 1366980659 is about 36972.7015377562. The cubic root of 1366980659 is about 1109.8240283225.

The spelling of 1366980659 in words is "one billion, three hundred sixty-six million, nine hundred eighty thousand, six hundred fifty-nine".