1180605861901 has 2 divisors, whose sum is σ = 1180605861902. Its totient is φ = 1180605861900.

The previous prime is 1180605861821. The next prime is 1180605861937. The reversal of 1180605861901 is 1091685060811.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 842771736676 + 337834125225 = 918026^2 + 581235^2 .

It is a cyclic number.

It is not a de Polignac number, because 1180605861901 - 2²⁷ = 1180471644173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1180605861971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 590302930950 + 590302930951.

It is an arithmetic number, because the mean of its divisors is an integer number (590302930951).

Almost surely, 2^{1180605861901} is an apocalyptic number.

It is an amenable number.

1180605861901 is a deficient number, since it is larger than the sum of its proper divisors (1).

1180605861901 is an equidigital number, since it uses as much as digits as its factorization.

1180605861901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 103680, while the sum is 46.

The spelling of 1180605861901 in words is "one trillion, one hundred eighty billion, six hundred five million, eight hundred sixty-one thousand, nine hundred one".