7397642853 has 6 divisors (see below), whose sum is σ = 10685484134. Its totient is φ = 4931761896.

The previous prime is 7397642827. The next prime is 7397642893. The reversal of 7397642853 is 3582467937.

It can be written as a sum of positive squares in only one way, i.e., 6413126724 + 984516129 = 80082^2 + 31377^2 .

It is not a de Polignac number, because 7397642853 - 2¹³ = 7397634661 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7397642853.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7397642893) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 410980150 + ... + 410980167.

Almost surely, 2^7397642853 is an apocalyptic number.

It is an amenable number.

7397642853 is a deficient number, since it is larger than the sum of its proper divisors (3287841281).

7397642853 is a wasteful number, since it uses less digits than its factorization.

7397642853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 821960323 (or 821960320 counting only the distinct ones).

The product of its digits is 7620480, while the sum is 54.

The square root of 7397642853 is about 86009.5509405787. The cubic root of 7397642853 is about 1948.4882302508.

The spelling of 7397642853 in words is "seven billion, three hundred ninety-seven million, six hundred forty-two thousand, eight hundred fifty-three".