2194692864 has 288 divisors, whose sum is σ = 7428255744. Its totient is φ = 559595520.

The previous prime is 2194692859. The next prime is 2194692887. The reversal of 2194692864 is 4682964912.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2166022 + ... + 2167034.

Almost surely, 2^2194692864 is an apocalyptic number.

2194692864 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2194692864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3714127872).

2194692864 is an abundant number, since it is smaller than the sum of its proper divisors (5233562880).

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

2194692864 is a wasteful number, since it uses less digits than its factorization.

2194692864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1083 (or 1069 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 51.

The square root of 2194692864 is about 46847.5491781587. The cubic root of 2194692864 is about 1299.5447842073.

The spelling of 2194692864 in words is "two billion, one hundred ninety-four million, six hundred ninety-two thousand, eight hundred sixty-four".