118999613 has 2 divisors, whose sum is σ = 118999614. Its totient is φ = 118999612.

The previous prime is 118999591. The next prime is 118999633. The reversal of 118999613 is 316999811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 97673689 + 21325924 = 9883^2 + 4618^2 .

It is a cyclic number.

It is not a de Polignac number, because 118999613 - 2¹² = 118995517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (118999633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59499806 + 59499807.

It is an arithmetic number, because the mean of its divisors is an integer number (59499807).

Almost surely, 2^118999613 is an apocalyptic number.

It is an amenable number.

118999613 is a deficient number, since it is larger than the sum of its proper divisors (1).

118999613 is an equidigital number, since it uses as much as digits as its factorization.

118999613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 104976, while the sum is 47.

The square root of 118999613 is about 10908.6943765054. The cubic root of 118999613 is about 491.8679402433.

It can be divided in two parts, 11899 and 9613, that added together give a palindrome (21512).

The spelling of 118999613 in words is "one hundred eighteen million, nine hundred ninety-nine thousand, six hundred thirteen".