18826847480 has 32 divisors (see below), whose sum is σ = 48411894240. Its totient is φ = 6454919040.

The previous prime is 18826847449. The next prime is 18826847513. The reversal of 18826847480 is 8474862881.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33619091 + ... + 33619650.

It is an arithmetic number, because the mean of its divisors is an integer number (1512871695).

Almost surely, 2^18826847480 is an apocalyptic number.

18826847480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18826847480 is an abundant number, since it is smaller than the sum of its proper divisors (29585046760).

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

18826847480 is a wasteful number, since it uses less digits than its factorization.

18826847480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67238759 (or 67238755 counting only the distinct ones).

The product of its (nonzero) digits is 5505024, while the sum is 56.

The spelling of 18826847480 in words is "eighteen billion, eight hundred twenty-six million, eight hundred forty-seven thousand, four hundred eighty".