2194172964 has 81 divisors (see below), whose sum is σ = 5727479121. Its totient is φ = 708251040.

The previous prime is 2194172947. The next prime is 2194172971. The reversal of 2194172964 is 4692714912.

The square root of 2194172964 is 46842.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 1963376100 + 230796864 = 44310^2 + 15192^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 10398819 + ... + 10399029.

Almost surely, 2^2194172964 is an apocalyptic number.

2194172964 is the 46842-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2194172964

2194172964 is an abundant number, since it is smaller than the sum of its proper divisors (3533306157).

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

2194172964 is a wasteful number, since it uses less digits than its factorization.

2194172964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506 (or 253 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The cubic root of 2194172964 is about 1299.4421598717.

The spelling of 2194172964 in words is "two billion, one hundred ninety-four million, one hundred seventy-two thousand, nine hundred sixty-four".