7340451991 has 2 divisors, whose sum is σ = 7340451992. Its totient is φ = 7340451990.

The previous prime is 7340451983. The next prime is 7340452033. The reversal of 7340451991 is 1991540437.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7340451991 - 2³ = 7340451983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7340451961) 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, 3670225995 + 3670225996.

It is an arithmetic number, because the mean of its divisors is an integer number (3670225996).

Almost surely, 2^7340451991 is an apocalyptic number.

7340451991 is a deficient number, since it is larger than the sum of its proper divisors (1).

7340451991 is an equidigital number, since it uses as much as digits as its factorization.

7340451991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 136080, while the sum is 43.

The square root of 7340451991 is about 85676.4377819246. The cubic root of 7340451991 is about 1943.4540082356.

The spelling of 7340451991 in words is "seven billion, three hundred forty million, four hundred fifty-one thousand, nine hundred ninety-one".