18181713011 has 48 divisors (see below), whose sum is σ = 23140518912. Its totient is φ = 13982485440.

The previous prime is 18181712977. The next prime is 18181713023. The reversal of 18181713011 is 11031718181.

It is a happy number.

It is not a de Polignac number, because 18181713011 - 2⁶ = 18181712947 is a prime.

It is a super-2 number, since 2×18181713011² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18181713041) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 24470306 + ... + 24471048.

It is an arithmetic number, because the mean of its divisors is an integer number (482094144).

Almost surely, 2^18181713011 is an apocalyptic number.

18181713011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

18181713011 is a deficient number, since it is larger than the sum of its proper divisors (4958805901).

18181713011 is a wasteful number, since it uses less digits than its factorization.

18181713011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1112 (or 1101 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 32.

The spelling of 18181713011 in words is "eighteen billion, one hundred eighty-one million, seven hundred thirteen thousand, eleven".