18036629851 has 2 divisors, whose sum is σ = 18036629852. Its totient is φ = 18036629850.

The previous prime is 18036629827. The next prime is 18036629867. The reversal of 18036629851 is 15892663081.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18036629851 - 2²¹ = 18034532699 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18036629795 and 18036629804.

It is not a weakly prime, because it can be changed into another prime (18036629881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9018314925 + 9018314926.

It is an arithmetic number, because the mean of its divisors is an integer number (9018314926).

Almost surely, 2^18036629851 is an apocalyptic number.

18036629851 is a deficient number, since it is larger than the sum of its proper divisors (1).

18036629851 is an equidigital number, since it uses as much as digits as its factorization.

18036629851 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 622080, while the sum is 49.

The spelling of 18036629851 in words is "eighteen billion, thirty-six million, six hundred twenty-nine thousand, eight hundred fifty-one".