18951441701 has 2 divisors, whose sum is σ = 18951441702. Its totient is φ = 18951441700.

The previous prime is 18951441697. The next prime is 18951441727. The reversal of 18951441701 is 10714415981.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11700748900 + 7250692801 = 108170^2 + 85151^2 .

It is a cyclic number.

It is not a de Polignac number, because 18951441701 - 2² = 18951441697 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18951441791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9475720850 + 9475720851.

It is an arithmetic number, because the mean of its divisors is an integer number (9475720851).

Almost surely, 2^18951441701 is an apocalyptic number.

It is an amenable number.

18951441701 is a deficient number, since it is larger than the sum of its proper divisors (1).

18951441701 is an equidigital number, since it uses as much as digits as its factorization.

18951441701 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40320, while the sum is 41.

The spelling of 18951441701 in words is "eighteen billion, nine hundred fifty-one million, four hundred forty-one thousand, seven hundred one".