4621434991 has 2 divisors, whose sum is σ = 4621434992. Its totient is φ = 4621434990.

The previous prime is 4621434971. The next prime is 4621435073. The reversal of 4621434991 is 1994341264.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4621434991 - 2⁵ = 4621434959 is a prime.

It is a super-2 number, since 2×4621434991² = 42715322752078340162, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4621434931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2310717495 + 2310717496.

It is an arithmetic number, because the mean of its divisors is an integer number (2310717496).

Almost surely, 2^4621434991 is an apocalyptic number.

4621434991 is a deficient number, since it is larger than the sum of its proper divisors (1).

4621434991 is an equidigital number, since it uses as much as digits as its factorization.

4621434991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 186624, while the sum is 43.

The square root of 4621434991 is about 67981.1370234420. The cubic root of 4621434991 is about 1665.6827292657.

The spelling of 4621434991 in words is "four billion, six hundred twenty-one million, four hundred thirty-four thousand, nine hundred ninety-one".