18724605948 has 48 divisors (see below), whose sum is σ = 48605508000. Its totient is φ = 6233791104.

The previous prime is 18724605931. The next prime is 18724605961. The reversal of 18724605948 is 84950642781.

It is a happy number.

18724605948 is a `hidden beast` number, since 1 + 8 + 7 + 2 + 46 + 0 + 594 + 8 = 666.

It is a super-2 number, since 2×18724605948² (a number of 21 digits) contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 18724605894 and 18724605903.

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 in 15 ways as a sum of consecutive naturals, for example, 19783 + ... + 194526.

It is an arithmetic number, because the mean of its divisors is an integer number (1012614750).

Almost surely, 2^18724605948 is an apocalyptic number.

18724605948 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

18724605948 is an abundant number, since it is smaller than the sum of its proper divisors (29880902052).

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

18724605948 is a wasteful number, since it uses less digits than its factorization.

18724605948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215131 (or 215123 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 54.

The spelling of 18724605948 in words is "eighteen billion, seven hundred twenty-four million, six hundred five thousand, nine hundred forty-eight".