118390487 has 2 divisors, whose sum is σ = 118390488. Its totient is φ = 118390486.

The previous prime is 118390469. The next prime is 118390507. The reversal of 118390487 is 784093811.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 118390487 - 2¹⁰ = 118389463 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (118390087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59195243 + 59195244.

It is an arithmetic number, because the mean of its divisors is an integer number (59195244).

Almost surely, 2^118390487 is an apocalyptic number.

118390487 is a deficient number, since it is larger than the sum of its proper divisors (1).

118390487 is an equidigital number, since it uses as much as digits as its factorization.

118390487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 41.

The square root of 118390487 is about 10880.7392671638. The cubic root of 118390487 is about 491.0272590339.

The spelling of 118390487 in words is "one hundred eighteen million, three hundred ninety thousand, four hundred eighty-seven".