38953743643 has 8 divisors (see below), whose sum is σ = 39121386560. Its totient is φ = 38786454720.

The previous prime is 38953743623. The next prime is 38953743709. The reversal of 38953743643 is 34634735983.

38953743643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38953743643 is a prime.

It is a super-2 number, since 2×38953743643² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38953743623) 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, 133246 + ... + 309292.

It is an arithmetic number, because the mean of its divisors is an integer number (4890173320).

Almost surely, 2^38953743643 is an apocalyptic number.

38953743643 is a deficient number, since it is larger than the sum of its proper divisors (167642917).

38953743643 is a wasteful number, since it uses less digits than its factorization.

38953743643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176997.

The product of its digits is 19595520, while the sum is 55.

The spelling of 38953743643 in words is "thirty-eight billion, nine hundred fifty-three million, seven hundred forty-three thousand, six hundred forty-three".