18009763951 has 16 divisors (see below), whose sum is σ = 18551332800. Its totient is φ = 17476692480.

The previous prime is 18009763921. The next prime is 18009763973. The reversal of 18009763951 is 15936790081.

It is a cyclic number.

It is not a de Polignac number, because 18009763951 - 2¹⁵ = 18009731183 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18009763895 and 18009763904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18009763901) 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, 1898446 + ... + 1907908.

It is an arithmetic number, because the mean of its divisors is an integer number (1159458300).

Almost surely, 2^18009763951 is an apocalyptic number.

18009763951 is a deficient number, since it is larger than the sum of its proper divisors (541568849).

18009763951 is a wasteful number, since it uses less digits than its factorization.

18009763951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9906.

The product of its (nonzero) digits is 408240, while the sum is 49.

The spelling of 18009763951 in words is "eighteen billion, nine million, seven hundred sixty-three thousand, nine hundred fifty-one".