118997783 has 2 divisors, whose sum is σ = 118997784. Its totient is φ = 118997782.

The previous prime is 118997777. The next prime is 118997797. The reversal of 118997783 is 387799811.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 118997783 - 2⁶ = 118997719 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (118997743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59498891 + 59498892.

It is an arithmetic number, because the mean of its divisors is an integer number (59498892).

Almost surely, 2^118997783 is an apocalyptic number.

118997783 is a deficient number, since it is larger than the sum of its proper divisors (1).

118997783 is an equidigital number, since it uses as much as digits as its factorization.

118997783 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 762048, while the sum is 53.

The square root of 118997783 is about 10908.6104981340. The cubic root of 118997783 is about 491.8654188824.

The spelling of 118997783 in words is "one hundred eighteen million, nine hundred ninety-seven thousand, seven hundred eighty-three".