18478860951 has 64 divisors (see below), whose sum is σ = 27479162880. Its totient is φ = 10993086720.

The previous prime is 18478860943. The next prime is 18478861067. The reversal of 18478860951 is 15906887481.

It is not a de Polignac number, because 18478860951 - 2³ = 18478860943 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a junction number, because it is equal to n+sod(n) for n = 18478860891 and 18478860900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18478860251) 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 63 ways as a sum of consecutive naturals, for example, 37944030 + ... + 37944516.

It is an arithmetic number, because the mean of its divisors is an integer number (429361920).

Almost surely, 2^18478860951 is an apocalyptic number.

18478860951 is a deficient number, since it is larger than the sum of its proper divisors (9000301929).

18478860951 is a wasteful number, since it uses less digits than its factorization.

18478860951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 916.

The product of its (nonzero) digits is 3870720, while the sum is 57.

The spelling of 18478860951 in words is "eighteen billion, four hundred seventy-eight million, eight hundred sixty thousand, nine hundred fifty-one".