18541868374607 has 2 divisors, whose sum is σ = 18541868374608. Its totient is φ = 18541868374606.

The previous prime is 18541868374541. The next prime is 18541868374663. The reversal of 18541868374607 is 70647386814581.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18541868374607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18541868374207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9270934187303 + 9270934187304.

It is an arithmetic number, because the mean of its divisors is an integer number (9270934187304).

Almost surely, 2^{18541868374607} is an apocalyptic number.

18541868374607 is a deficient number, since it is larger than the sum of its proper divisors (1).

18541868374607 is an equidigital number, since it uses as much as digits as its factorization.

18541868374607 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216760320, while the sum is 68.

The spelling of 18541868374607 in words is "eighteen trillion, five hundred forty-one billion, eight hundred sixty-eight million, three hundred seventy-four thousand, six hundred seven".