18248947920 has 160 divisors (see below), whose sum is σ = 71837187840. Its totient is φ = 4171184640.

The previous prime is 18248947897. The next prime is 18248947949. The reversal of 18248947920 is 2974984281.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 588351 + ... + 618590.

It is an arithmetic number, because the mean of its divisors is an integer number (448982424).

Almost surely, 2^18248947920 is an apocalyptic number.

18248947920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18248947920 is an abundant number, since it is smaller than the sum of its proper divisors (53588239920).

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

18248947920 is a wasteful number, since it uses less digits than its factorization.

18248947920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1206970 (or 1206958 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 54.

The spelling of 18248947920 in words is "eighteen billion, two hundred forty-eight million, nine hundred forty-seven thousand, nine hundred twenty".