7538686353 has 18 divisors (see below), whose sum is σ = 11969137362. Its totient is φ = 4568900160.

The previous prime is 7538686327. The next prime is 7538686409. The reversal of 7538686353 is 3536868357.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 6277868289 + 1260818064 = 79233^2 + 35508^2 .

It is not a de Polignac number, because 7538686353 - 2⁵ = 7538686321 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7538686353.

It is not an unprimeable number, because it can be changed into a prime (7538686303) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 3460200 + ... + 3462377.

Almost surely, 2^7538686353 is an apocalyptic number.

It is an amenable number.

7538686353 is a deficient number, since it is larger than the sum of its proper divisors (4430451009).

7538686353 is a wasteful number, since it uses less digits than its factorization.

7538686353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6922605 (or 6922591 counting only the distinct ones).

The product of its digits is 10886400, while the sum is 54.

The square root of 7538686353 is about 86825.6088547613. The cubic root of 7538686353 is about 1960.7936492443.

The spelling of 7538686353 in words is "seven billion, five hundred thirty-eight million, six hundred eighty-six thousand, three hundred fifty-three".