1334638657 has 4 divisors (see below), whose sum is σ = 1455969456. Its totient is φ = 1213307860.

The previous prime is 1334638651. The next prime is 1334638661. The reversal of 1334638657 is 7568364331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1334638657 - 2²³ = 1326250049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1334638651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60665383 + ... + 60665404.

It is an arithmetic number, because the mean of its divisors is an integer number (363992364).

Almost surely, 2^1334638657 is an apocalyptic number.

It is an amenable number.

1334638657 is a deficient number, since it is larger than the sum of its proper divisors (121330799).

1334638657 is a wasteful number, since it uses less digits than its factorization.

1334638657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121330798.

The product of its digits is 1088640, while the sum is 46.

The square root of 1334638657 is about 36532.7066749782. The cubic root of 1334638657 is about 1101.0014728011.

It can be divided in two parts, 13346 and 38657, that added together give a triangular number (52003 = T₃₂₂).

The spelling of 1334638657 in words is "one billion, three hundred thirty-four million, six hundred thirty-eight thousand, six hundred fifty-seven".