2491813194 has 32 divisors (see below), whose sum is σ = 5481181440. Its totient is φ = 750397632.

The previous prime is 2491813187. The next prime is 2491813223. The reversal of 2491813194 is 4913181942.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 336189 + ... + 343520.

It is an arithmetic number, because the mean of its divisors is an integer number (171286920).

Almost surely, 2^2491813194 is an apocalyptic number.

2491813194 is an abundant number, since it is smaller than the sum of its proper divisors (2989368246).

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

2491813194 is a wasteful number, since it uses less digits than its factorization.

2491813194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 679774.

The product of its digits is 62208, while the sum is 42.

The square root of 2491813194 is about 49918.0648062402. The cubic root of 2491813194 is about 1355.7256941597.

The spelling of 2491813194 in words is "two billion, four hundred ninety-one million, eight hundred thirteen thousand, one hundred ninety-four".