118197911693 has 2 divisors, whose sum is σ = 118197911694. Its totient is φ = 118197911692.

The previous prime is 118197911687. The next prime is 118197911701. The reversal of 118197911693 is 396119791811.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 112947749929 + 5250161764 = 336077^2 + 72458^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-118197911693 is a prime.

It is a super-2 number, since 2×118197911693² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (118197911683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59098955846 + 59098955847.

It is an arithmetic number, because the mean of its divisors is an integer number (59098955847).

Almost surely, 2^118197911693 is an apocalyptic number.

It is an amenable number.

118197911693 is a deficient number, since it is larger than the sum of its proper divisors (1).

118197911693 is an equidigital number, since it uses as much as digits as its factorization.

118197911693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 734832, while the sum is 56.

The spelling of 118197911693 in words is "one hundred eighteen billion, one hundred ninety-seven million, nine hundred eleven thousand, six hundred ninety-three".