13402674949 has 4 divisors (see below), whose sum is σ = 13405364236. Its totient is φ = 13399985664.

The previous prime is 13402674937. The next prime is 13402674973. The reversal of 13402674949 is 94947620431.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6582888225 + 6819786724 = 81135^2 + 82582^2 .

It is a cyclic number.

It is not a de Polignac number, because 13402674949 - 2¹⁵ = 13402642181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13402674449) 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, 1337154 + ... + 1347139.

It is an arithmetic number, because the mean of its divisors is an integer number (3351341059).

Almost surely, 2^13402674949 is an apocalyptic number.

It is an amenable number.

13402674949 is a deficient number, since it is larger than the sum of its proper divisors (2689287).

13402674949 is an equidigital number, since it uses as much as digits as its factorization.

13402674949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2689286.

The product of its (nonzero) digits is 1306368, while the sum is 49.

The spelling of 13402674949 in words is "thirteen billion, four hundred two million, six hundred seventy-four thousand, nine hundred forty-nine".