4623183991 has 2 divisors, whose sum is σ = 4623183992. Its totient is φ = 4623183990.

The previous prime is 4623183979. The next prime is 4623184019. The reversal of 4623183991 is 1993813264.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4623183991 - 2⁹ = 4623183479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4623183941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2311591995 + 2311591996.

It is an arithmetic number, because the mean of its divisors is an integer number (2311591996).

Almost surely, 2^4623183991 is an apocalyptic number.

4623183991 is a deficient number, since it is larger than the sum of its proper divisors (1).

4623183991 is an equidigital number, since it uses as much as digits as its factorization.

4623183991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 279936, while the sum is 46.

The square root of 4623183991 is about 67993.9996690884. Note that the first 3 decimals coincide. The cubic root of 4623183991 is about 1665.8928307935.

The spelling of 4623183991 in words is "four billion, six hundred twenty-three million, one hundred eighty-three thousand, nine hundred ninety-one".