168130731813 has 8 divisors (see below), whose sum is σ = 244553791776. Its totient is φ = 101897413200.

The previous prime is 168130731763. The next prime is 168130731863. The reversal of 168130731813 is 318137031861.

It is an interprime number because it is at equal distance from previous prime (168130731763) and next prime (168130731863).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 168130731813 - 2¹² = 168130727717 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168130731863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2547435298 + ... + 2547435363.

It is an arithmetic number, because the mean of its divisors is an integer number (30569223972).

Almost surely, 2^168130731813 is an apocalyptic number.

It is an amenable number.

168130731813 is a deficient number, since it is larger than the sum of its proper divisors (76423059963).

168130731813 is a wasteful number, since it uses less digits than its factorization.

168130731813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5094870675.

The product of its (nonzero) digits is 72576, while the sum is 42.

The spelling of 168130731813 in words is "one hundred sixty-eight billion, one hundred thirty million, seven hundred thirty-one thousand, eight hundred thirteen".