8651594494 has 4 divisors (see below), whose sum is σ = 12977391744. Its totient is φ = 4325797246.

The previous prime is 8651594407. The next prime is 8651594533. The reversal of 8651594494 is 4944951568.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×8651594494² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2162898622 + ... + 2162898625.

It is an arithmetic number, because the mean of its divisors is an integer number (3244347936).

Almost surely, 2^8651594494 is an apocalyptic number.

8651594494 is a deficient number, since it is larger than the sum of its proper divisors (4325797250).

8651594494 is a wasteful number, since it uses less digits than its factorization.

8651594494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4325797249.

The product of its digits is 6220800, while the sum is 55.

The square root of 8651594494 is about 93013.9478465461. The cubic root of 8651594494 is about 2052.8886102615. Note that the first 3 decimals are identical.

The spelling of 8651594494 in words is "eight billion, six hundred fifty-one million, five hundred ninety-four thousand, four hundred ninety-four".