18514780924 has 12 divisors (see below), whose sum is σ = 32402175624. Its totient is φ = 9257016464.

The previous prime is 18514780913. The next prime is 18514780927. The reversal of 18514780924 is 42908741581.

It is a super-2 number, since 2×18514780924² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18514780927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38634 + ... + 196270.

It is an arithmetic number, because the mean of its divisors is an integer number (2700181302).

Almost surely, 2^18514780924 is an apocalyptic number.

It is an amenable number.

18514780924 is a deficient number, since it is larger than the sum of its proper divisors (13887394700).

18514780924 is a wasteful number, since it uses less digits than its factorization.

18514780924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187004 (or 187002 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 49.

The spelling of 18514780924 in words is "eighteen billion, five hundred fourteen million, seven hundred eighty thousand, nine hundred twenty-four".