4151331491 has 2 divisors, whose sum is σ = 4151331492. Its totient is φ = 4151331490.

The previous prime is 4151331463. The next prime is 4151331523. The reversal of 4151331491 is 1941331514.

It is an a-pointer prime, because the next prime (4151331523) can be obtained adding 4151331491 to its sum of digits (32).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4151331491 - 2¹⁸ = 4151069347 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (4151321491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2075665745 + 2075665746.

It is an arithmetic number, because the mean of its divisors is an integer number (2075665746).

Almost surely, 2^4151331491 is an apocalyptic number.

4151331491 is a deficient number, since it is larger than the sum of its proper divisors (1).

4151331491 is an equidigital number, since it uses as much as digits as its factorization.

4151331491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6480, while the sum is 32.

The square root of 4151331491 is about 64430.8271792315. The cubic root of 4151331491 is about 1607.1724209167.

The spelling of 4151331491 in words is "four billion, one hundred fifty-one million, three hundred thirty-one thousand, four hundred ninety-one".