7405638653 has 8 divisors (see below), whose sum is σ = 8670016320. Its totient is φ = 6192868320.

The previous prime is 7405638629. The next prime is 7405638671. The reversal of 7405638653 is 3568365047.

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 7405638653 - 2²⁴ = 7388861437 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7405638598 and 7405638607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7405638623) 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, 12901523 + ... + 12902096.

It is an arithmetic number, because the mean of its divisors is an integer number (1083752040).

Almost surely, 2^7405638653 is an apocalyptic number.

It is an amenable number.

7405638653 is a deficient number, since it is larger than the sum of its proper divisors (1264377667).

7405638653 is a wasteful number, since it uses less digits than its factorization.

7405638653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25803667.

The product of its (nonzero) digits is 1814400, while the sum is 47.

The square root of 7405638653 is about 86056.0204343659. The cubic root of 7405638653 is about 1949.1899903796.

The spelling of 7405638653 in words is "seven billion, four hundred five million, six hundred thirty-eight thousand, six hundred fifty-three".