18402912851 has 16 divisors (see below), whose sum is σ = 19102752000. Its totient is φ = 17714762208.

The previous prime is 18402912817. The next prime is 18402912877. The reversal of 18402912851 is 15821920481.

It is not a de Polignac number, because 18402912851 - 2¹⁴ = 18402896467 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18402912799 and 18402912808.

It is not an unprimeable number, because it can be changed into a prime (18402915851) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1310996 + ... + 1324958.

It is an arithmetic number, because the mean of its divisors is an integer number (1193922000).

Almost surely, 2^18402912851 is an apocalyptic number.

18402912851 is a deficient number, since it is larger than the sum of its proper divisors (699839149).

18402912851 is a wasteful number, since it uses less digits than its factorization.

18402912851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14378.

The product of its (nonzero) digits is 46080, while the sum is 41.

The spelling of 18402912851 in words is "eighteen billion, four hundred two million, nine hundred twelve thousand, eight hundred fifty-one".