18020892513 has 32 divisors (see below), whose sum is σ = 27974262400. Its totient is φ = 10222142976.

The previous prime is 18020892497. The next prime is 18020892569. The reversal of 18020892513 is 31529802081.

It is not a de Polignac number, because 18020892513 - 2⁴ = 18020892497 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (18020892583) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 301228 + ... + 356061.

It is an arithmetic number, because the mean of its divisors is an integer number (874195700).

Almost surely, 2^18020892513 is an apocalyptic number.

18020892513 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

18020892513 is a deficient number, since it is larger than the sum of its proper divisors (9953369887).

18020892513 is a wasteful number, since it uses less digits than its factorization.

18020892513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657361.

The product of its (nonzero) digits is 34560, while the sum is 39.

The spelling of 18020892513 in words is "eighteen billion, twenty million, eight hundred ninety-two thousand, five hundred thirteen".