7257408197 has 8 divisors (see below), whose sum is σ = 7816386816. Its totient is φ = 6698531952.

The previous prime is 7257408167. The next prime is 7257408203. The reversal of 7257408197 is 7918047527.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7257408197 - 2²⁸ = 6988972741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7257408107) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 187268 + ... + 222674.

It is an arithmetic number, because the mean of its divisors is an integer number (977048352).

Almost surely, 2^7257408197 is an apocalyptic number.

It is an amenable number.

7257408197 is a deficient number, since it is larger than the sum of its proper divisors (558978619).

7257408197 is a wasteful number, since it uses less digits than its factorization.

7257408197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51187.

The product of its (nonzero) digits is 987840, while the sum is 50.

The square root of 7257408197 is about 85190.4231530751. The cubic root of 7257408197 is about 1936.0973192781.

The spelling of 7257408197 in words is "seven billion, two hundred fifty-seven million, four hundred eight thousand, one hundred ninety-seven".