2640316194 has 48 divisors (see below), whose sum is σ = 5931169920. Its totient is φ = 847859040.

The previous prime is 2640316181. The next prime is 2640316201. The reversal of 2640316194 is 4916130462.

2640316194 is a `hidden beast` number, since 2 + 6 + 4 + 0 + 31 + 619 + 4 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 238359 + ... + 249189.

It is an arithmetic number, because the mean of its divisors is an integer number (123566040).

Almost surely, 2^2640316194 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2640316194, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2965584960).

2640316194 is an abundant number, since it is smaller than the sum of its proper divisors (3290853726).

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

2640316194 is a wasteful number, since it uses less digits than its factorization.

2640316194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11335 (or 11332 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 2640316194 is about 51384.0071812232. The cubic root of 2640316194 is about 1382.1398214349.

The spelling of 2640316194 in words is "two billion, six hundred forty million, three hundred sixteen thousand, one hundred ninety-four".