2664381694 has 8 divisors (see below), whose sum is σ = 4304001240. Its totient is φ = 1229714616.

The previous prime is 2664381691. The next prime is 2664381719. The reversal of 2664381694 is 4961834662.

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

It is a super-2 number, since 2×2664381694² = 14197859622644619272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2664381691) 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, 51238084 + ... + 51238135.

It is an arithmetic number, because the mean of its divisors is an integer number (538000155).

Almost surely, 2^2664381694 is an apocalyptic number.

2664381694 is a deficient number, since it is larger than the sum of its proper divisors (1639619546).

2664381694 is a wasteful number, since it uses less digits than its factorization.

2664381694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102476234.

The product of its digits is 1492992, while the sum is 49.

The square root of 2664381694 is about 51617.6490553377. The cubic root of 2664381694 is about 1386.3263576290.

The spelling of 2664381694 in words is "two billion, six hundred sixty-four million, three hundred eighty-one thousand, six hundred ninety-four".