11818431983 has 2 divisors, whose sum is σ = 11818431984. Its totient is φ = 11818431982.

The previous prime is 11818431899. The next prime is 11818432027. The reversal of 11818431983 is 38913481811.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11818431983 - 2¹⁰ = 11818430959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11818431083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5909215991 + 5909215992.

It is an arithmetic number, because the mean of its divisors is an integer number (5909215992).

Almost surely, 2^11818431983 is an apocalyptic number.

11818431983 is a deficient number, since it is larger than the sum of its proper divisors (1).

11818431983 is an equidigital number, since it uses as much as digits as its factorization.

11818431983 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 165888, while the sum is 47.

The spelling of 11818431983 in words is "eleven billion, eight hundred eighteen million, four hundred thirty-one thousand, nine hundred eighty-three".