118187423 has 2 divisors, whose sum is σ = 118187424. Its totient is φ = 118187422.

The previous prime is 118187411. The next prime is 118187437. The reversal of 118187423 is 324781811.

It is a weak prime.

It is an emirp because it is prime and its reverse (324781811) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 118187423 - 2⁶ = 118187359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (118187623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59093711 + 59093712.

It is an arithmetic number, because the mean of its divisors is an integer number (59093712).

Almost surely, 2^118187423 is an apocalyptic number.

118187423 is a deficient number, since it is larger than the sum of its proper divisors (1).

118187423 is an equidigital number, since it uses as much as digits as its factorization.

118187423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10752, while the sum is 35.

The square root of 118187423 is about 10871.4039111791. The cubic root of 118187423 is about 490.7463608415.

The spelling of 118187423 in words is "one hundred eighteen million, one hundred eighty-seven thousand, four hundred twenty-three".