118537245493 has 2 divisors, whose sum is σ = 118537245494. Its totient is φ = 118537245492.

The previous prime is 118537245443. The next prime is 118537245517. The reversal of 118537245493 is 394542735811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 109761677809 + 8775567684 = 331303^2 + 93678^2 .

It is a cyclic number.

It is not a de Polignac number, because 118537245493 - 2⁹ = 118537244981 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 118537245493.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (118537245403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59268622746 + 59268622747.

It is an arithmetic number, because the mean of its divisors is an integer number (59268622747).

Almost surely, 2^118537245493 is an apocalyptic number.

It is an amenable number.

118537245493 is a deficient number, since it is larger than the sum of its proper divisors (1).

118537245493 is an equidigital number, since it uses as much as digits as its factorization.

118537245493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3628800, while the sum is 52.

The spelling of 118537245493 in words is "one hundred eighteen billion, five hundred thirty-seven million, two hundred forty-five thousand, four hundred ninety-three".