2194866634 has 16 divisors (see below), whose sum is σ = 3551740488. Its totient is φ = 1013389312.

The previous prime is 2194866629. The next prime is 2194866637. The reversal of 2194866634 is 4366684912.

It can be written as a sum of positive squares in 4 ways, for example, as 2152681609 + 42185025 = 46397^2 + 6495^2 .

It is not an unprimeable number, because it can be changed into a prime (2194866637) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 607207 + ... + 610810.

Almost surely, 2^2194866634 is an apocalyptic number.

2194866634 is a deficient number, since it is larger than the sum of its proper divisors (1356873854).

2194866634 is a wasteful number, since it uses less digits than its factorization.

2194866634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1218089.

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

The square root of 2194866634 is about 46849.4037742211. The cubic root of 2194866634 is about 1299.5790814797.

The spelling of 2194866634 in words is "two billion, one hundred ninety-four million, eight hundred sixty-six thousand, six hundred thirty-four".