1797708013 has 4 divisors (see below), whose sum is σ = 1798046748. Its totient is φ = 1797369280.

The previous prime is 1797707953. The next prime is 1797708023. The reversal of 1797708013 is 3108077971.

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 1358512164 + 439195849 = 36858^2 + 20957^2 .

It is a cyclic number.

It is not a de Polignac number, because 1797708013 - 2⁹ = 1797707501 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 (1797708023) 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, 161278 + ... + 172063.

It is an arithmetic number, because the mean of its divisors is an integer number (449511687).

Almost surely, 2^1797708013 is an apocalyptic number.

It is an amenable number.

1797708013 is a deficient number, since it is larger than the sum of its proper divisors (338735).

1797708013 is an equidigital number, since it uses as much as digits as its factorization.

1797708013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338734.

The product of its (nonzero) digits is 74088, while the sum is 43.

The square root of 1797708013 is about 42399.3869413226. The cubic root of 1797708013 is about 1215.9238713756.

The spelling of 1797708013 in words is "one billion, seven hundred ninety-seven million, seven hundred eight thousand, thirteen".