1864632494 has 8 divisors (see below), whose sum is σ = 2918555280. Its totient is φ = 891780736.

The previous prime is 1864632493. The next prime is 1864632499. The reversal of 1864632494 is 4942364681.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1864632493) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20267699 + ... + 20267790.

It is an arithmetic number, because the mean of its divisors is an integer number (364819410).

Almost surely, 2^1864632494 is an apocalyptic number.

1864632494 is a deficient number, since it is larger than the sum of its proper divisors (1053922786).

1864632494 is a wasteful number, since it uses less digits than its factorization.

1864632494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40535514.

The product of its digits is 995328, while the sum is 47.

The square root of 1864632494 is about 43181.3905982658. The cubic root of 1864632494 is about 1230.8290825579.

The spelling of 1864632494 in words is "one billion, eight hundred sixty-four million, six hundred thirty-two thousand, four hundred ninety-four".