7242691591 has 2 divisors, whose sum is σ = 7242691592. Its totient is φ = 7242691590.

The previous prime is 7242691583. The next prime is 7242691597. The reversal of 7242691591 is 1951962427.

It is a strong prime.

It is an emirp because it is prime and its reverse (1951962427) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7242691591 - 2³ = 7242691583 is a prime.

It is a super-2 number, since 2×7242691591² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7242691597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3621345795 + 3621345796.

It is an arithmetic number, because the mean of its divisors is an integer number (3621345796).

Almost surely, 2^7242691591 is an apocalyptic number.

7242691591 is a deficient number, since it is larger than the sum of its proper divisors (1).

7242691591 is an equidigital number, since it uses as much as digits as its factorization.

7242691591 is an evil number, because the sum of its binary digits is even.

The product of its digits is 272160, while the sum is 46.

The square root of 7242691591 is about 85104.0045532524. The cubic root of 7242691591 is about 1934.7877579930.

The spelling of 7242691591 in words is "seven billion, two hundred forty-two million, six hundred ninety-one thousand, five hundred ninety-one".