18261013751 has 2 divisors, whose sum is σ = 18261013752. Its totient is φ = 18261013750.

The previous prime is 18261013723. The next prime is 18261013759. The reversal of 18261013751 is 15731016281.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18261013751 - 2¹⁴ = 18260997367 is a prime.

It is a super-2 number, since 2×18261013751² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18261013759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9130506875 + 9130506876.

It is an arithmetic number, because the mean of its divisors is an integer number (9130506876).

Almost surely, 2^18261013751 is an apocalyptic number.

18261013751 is a deficient number, since it is larger than the sum of its proper divisors (1).

18261013751 is an equidigital number, since it uses as much as digits as its factorization.

18261013751 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 35.

The spelling of 18261013751 in words is "eighteen billion, two hundred sixty-one million, thirteen thousand, seven hundred fifty-one".