118617451 has 2 divisors, whose sum is σ = 118617452. Its totient is φ = 118617450.

The previous prime is 118617431. The next prime is 118617461. The reversal of 118617451 is 154716811.

It is a strong prime.

It is an emirp because it is prime and its reverse (154716811) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 118617451 - 2⁵ = 118617419 is a prime.

It is not a weakly prime, because it can be changed into another prime (118617431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59308725 + 59308726.

It is an arithmetic number, because the mean of its divisors is an integer number (59308726).

Almost surely, 2^118617451 is an apocalyptic number.

118617451 is a deficient number, since it is larger than the sum of its proper divisors (1).

118617451 is an equidigital number, since it uses as much as digits as its factorization.

118617451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6720, while the sum is 34.

The square root of 118617451 is about 10891.1638955623. The cubic root of 118617451 is about 491.3408381982.

The spelling of 118617451 in words is "one hundred eighteen million, six hundred seventeen thousand, four hundred fifty-one".