2381312664 has 48 divisors (see below), whose sum is σ = 6451894800. Its totient is φ = 793462464.

The previous prime is 2381312561. The next prime is 2381312683. The reversal of 2381312664 is 4662131832.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 251602 + ... + 260894.

It is an arithmetic number, because the mean of its divisors is an integer number (134414475).

Almost surely, 2^2381312664 is an apocalyptic number.

2381312664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2381312664 is an abundant number, since it is smaller than the sum of its proper divisors (4070582136).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2381312664 is a wasteful number, since it uses less digits than its factorization.

2381312664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12864 (or 12857 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 2381312664 is about 48798.6953104281. The cubic root of 2381312664 is about 1335.3818644173.

The spelling of 2381312664 in words is "two billion, three hundred eighty-one million, three hundred twelve thousand, six hundred sixty-four".