4161251491 has 2 divisors, whose sum is σ = 4161251492. Its totient is φ = 4161251490.

The previous prime is 4161251459. The next prime is 4161251519. The reversal of 4161251491 is 1941521614.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4161251491 - 2⁵ = 4161251459 is a prime.

It is not a weakly prime, because it can be changed into another prime (4161251401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2080625745 + 2080625746.

It is an arithmetic number, because the mean of its divisors is an integer number (2080625746).

Almost surely, 2^4161251491 is an apocalyptic number.

4161251491 is a deficient number, since it is larger than the sum of its proper divisors (1).

4161251491 is an equidigital number, since it uses as much as digits as its factorization.

4161251491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 34.

The square root of 4161251491 is about 64507.7630289564. The cubic root of 4161251491 is about 1608.4515661788.

The spelling of 4161251491 in words is "four billion, one hundred sixty-one million, two hundred fifty-one thousand, four hundred ninety-one".