18081968354 has 8 divisors (see below), whose sum is σ = 27132304320. Its totient is φ = 9037866916.

The previous prime is 18081968353. The next prime is 18081968369. The reversal of 18081968354 is 45386918081.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 18081968296 and 18081968305.

It is not an unprimeable number, because it can be changed into a prime (18081968353) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1551374 + ... + 1562985.

It is an arithmetic number, because the mean of its divisors is an integer number (3391538040).

Almost surely, 2^18081968354 is an apocalyptic number.

18081968354 is a deficient number, since it is larger than the sum of its proper divisors (9050335966).

18081968354 is a wasteful number, since it uses less digits than its factorization.

18081968354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3117264.

The product of its (nonzero) digits is 1658880, while the sum is 53.

The spelling of 18081968354 in words is "eighteen billion, eighty-one million, nine hundred sixty-eight thousand, three hundred fifty-four".