7974834457 has 8 divisors (see below), whose sum is σ = 8100364680. Its totient is φ = 7850217600.

The previous prime is 7974834449. The next prime is 7974834473. The reversal of 7974834457 is 7544384797.

It can be written as a sum of positive squares in 4 ways, for example, as 7306146576 + 668687881 = 85476^2 + 25859^2 .

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 7974834457 - 2³ = 7974834449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7974834757) 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 in 7 ways as a sum of consecutive naturals, for example, 210732 + ... + 245677.

It is an arithmetic number, because the mean of its divisors is an integer number (1012545585).

Almost surely, 2^7974834457 is an apocalyptic number.

It is an amenable number.

7974834457 is a deficient number, since it is larger than the sum of its proper divisors (125530223).

7974834457 is a wasteful number, since it uses less digits than its factorization.

7974834457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456683.

The product of its digits is 23708160, while the sum is 58.

The square root of 7974834457 is about 89301.9286297894. The cubic root of 7974834457 is about 1997.9006685915.

The spelling of 7974834457 in words is "seven billion, nine hundred seventy-four million, eight hundred thirty-four thousand, four hundred fifty-seven".