2241787991 has 2 divisors, whose sum is σ = 2241787992. Its totient is φ = 2241787990.

The previous prime is 2241787973. The next prime is 2241788027. The reversal of 2241787991 is 1997871422.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2241787991 - 2⁶ = 2241787927 is a prime.

It is a super-2 number, since 2×2241787991² = 10051226793183632162, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2241787921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1120893995 + 1120893996.

It is an arithmetic number, because the mean of its divisors is an integer number (1120893996).

Almost surely, 2^2241787991 is an apocalyptic number.

2241787991 is a deficient number, since it is larger than the sum of its proper divisors (1).

2241787991 is an equidigital number, since it uses as much as digits as its factorization.

2241787991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 508032, while the sum is 50.

The square root of 2241787991 is about 47347.5235994450. The cubic root of 2241787991 is about 1308.7745646508.

The spelling of 2241787991 in words is "two billion, two hundred forty-one million, seven hundred eighty-seven thousand, nine hundred ninety-one".