4990111691 has 2 divisors, whose sum is σ = 4990111692. Its totient is φ = 4990111690.

The previous prime is 4990111631. The next prime is 4990111727. The reversal of 4990111691 is 1961110994.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4990111691 - 2¹⁸ = 4989849547 is a prime.

It is not a weakly prime, because it can be changed into another prime (4990111631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2495055845 + 2495055846.

It is an arithmetic number, because the mean of its divisors is an integer number (2495055846).

Almost surely, 2^4990111691 is an apocalyptic number.

4990111691 is a deficient number, since it is larger than the sum of its proper divisors (1).

4990111691 is an equidigital number, since it uses as much as digits as its factorization.

4990111691 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17496, while the sum is 41.

The square root of 4990111691 is about 70640.7226109699. The cubic root of 4990111691 is about 1708.8479513823.

The spelling of 4990111691 in words is "four billion, nine hundred ninety million, one hundred eleven thousand, six hundred ninety-one".