38640933850 has 24 divisors (see below), whose sum is σ = 71880659388. Its totient is φ = 15454540800.

The previous prime is 38640933839. The next prime is 38640933901. The reversal of 38640933850 is 5833904683.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 2262619489 + 36378314361 = 47567^2 + 190731^2 .

It is a junction number, because it is equal to n+sod(n) for n = 38640933794 and 38640933803.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 428730 + ... + 510970.

Almost surely, 2^38640933850 is an apocalyptic number.

38640933850 is a deficient number, since it is larger than the sum of its proper divisors (33239725538).

38640933850 is a wasteful number, since it uses less digits than its factorization.

38640933850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91650 (or 91645 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 49.

The spelling of 38640933850 in words is "thirty-eight billion, six hundred forty million, nine hundred thirty-three thousand, eight hundred fifty".