18283058993 has 2 divisors, whose sum is σ = 18283058994. Its totient is φ = 18283058992.

The previous prime is 18283058957. The next prime is 18283059001. The reversal of 18283058993 is 39985038281.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13458784144 + 4824274849 = 116012^2 + 69457^2 .

It is a cyclic number.

It is not a de Polignac number, because 18283058993 - 2²² = 18278864689 is a prime.

It is a super-2 number, since 2×18283058993² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (18283058393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9141529496 + 9141529497.

It is an arithmetic number, because the mean of its divisors is an integer number (9141529497).

Almost surely, 2^18283058993 is an apocalyptic number.

It is an amenable number.

18283058993 is a deficient number, since it is larger than the sum of its proper divisors (1).

18283058993 is an equidigital number, since it uses as much as digits as its factorization.

18283058993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3732480, while the sum is 56.

The spelling of 18283058993 in words is "eighteen billion, two hundred eighty-three million, fifty-eight thousand, nine hundred ninety-three".