4660441991 has 2 divisors, whose sum is σ = 4660441992. Its totient is φ = 4660441990.

The previous prime is 4660441987. The next prime is 4660442053. The reversal of 4660441991 is 1991440664.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4660441991 - 2² = 4660441987 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4660441091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2330220995 + 2330220996.

It is an arithmetic number, because the mean of its divisors is an integer number (2330220996).

Almost surely, 2^4660441991 is an apocalyptic number.

4660441991 is a deficient number, since it is larger than the sum of its proper divisors (1).

4660441991 is an equidigital number, since it uses as much as digits as its factorization.

4660441991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 186624, while the sum is 44.

The square root of 4660441991 is about 68267.4299428358. The cubic root of 4660441991 is about 1670.3559773971.

The spelling of 4660441991 in words is "four billion, six hundred sixty million, four hundred forty-one thousand, nine hundred ninety-one".