8631157478 has 8 divisors (see below), whose sum is σ = 12967255920. Its totient is φ = 4308738840.

The previous prime is 8631157477. The next prime is 8631157501. The reversal of 8631157478 is 8747511368.

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 (8631157477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3418373 + ... + 3420896.

It is an arithmetic number, because the mean of its divisors is an integer number (1620906990).

Almost surely, 2^8631157478 is an apocalyptic number.

8631157478 is a deficient number, since it is larger than the sum of its proper divisors (4336098442).

8631157478 is a wasteful number, since it uses less digits than its factorization.

8631157478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6839902.

The product of its digits is 1128960, while the sum is 50.

The square root of 8631157478 is about 92904.0229376532. The cubic root of 8631157478 is about 2051.2708739208.

The spelling of 8631157478 in words is "eight billion, six hundred thirty-one million, one hundred fifty-seven thousand, four hundred seventy-eight".