2359887991 has 2 divisors, whose sum is σ = 2359887992. Its totient is φ = 2359887990.

The previous prime is 2359887953. The next prime is 2359888039. The reversal of 2359887991 is 1997889532.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2359887991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2359887941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1179943995 + 1179943996.

It is an arithmetic number, because the mean of its divisors is an integer number (1179943996).

Almost surely, 2^2359887991 is an apocalyptic number.

2359887991 is a deficient number, since it is larger than the sum of its proper divisors (1).

2359887991 is an equidigital number, since it uses as much as digits as its factorization.

2359887991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9797760, while the sum is 61.

The square root of 2359887991 is about 48578.6783578969. The cubic root of 2359887991 is about 1331.3649828285.

The spelling of 2359887991 in words is "two billion, three hundred fifty-nine million, eight hundred eighty-seven thousand, nine hundred ninety-one".