1634624761313 has 4 divisors (see below), whose sum is σ = 1634631679380. Its totient is φ = 1634617843248.

The previous prime is 1634624761271. The next prime is 1634624761361. The reversal of 1634624761313 is 3131674264361.

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 183438320209 + 1451186441104 = 428297^2 + 1204652^2 .

It is a cyclic number.

It is not a de Polignac number, because 1634624761313 - 2⁸ = 1634624761057 is a prime.

It is a super-2 number, since 2×1634624761313² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1634624761613) 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, 3091598 + ... + 3581511.

It is an arithmetic number, because the mean of its divisors is an integer number (408657919845).

Almost surely, 2^{1634624761313} is an apocalyptic number.

It is an amenable number.

1634624761313 is a deficient number, since it is larger than the sum of its proper divisors (6918067).

1634624761313 is an equidigital number, since it uses as much as digits as its factorization.

1634624761313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6918066.

The product of its digits is 1306368, while the sum is 47.

The spelling of 1634624761313 in words is "one trillion, six hundred thirty-four billion, six hundred twenty-four million, seven hundred sixty-one thousand, three hundred thirteen".