11893782650 has 12 divisors (see below), whose sum is σ = 22122435822. Its totient is φ = 4757513040.

The previous prime is 11893782643. The next prime is 11893782689. The reversal of 11893782650 is 5628739811.

It can be written as a sum of positive squares in 3 ways, for example, as 11637878641 + 255904009 = 107879^2 + 15997^2 .

It is a Harshad number since it is a multiple of its sum of digits (50), and also a Moran number because the ratio is a prime number: 237875653 = 11893782650 / (1 + 1 + 8 + 9 + 3 + 7 + 8 + 2 + 6 + 5 + 0).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 118937777 + ... + 118937876.

Almost surely, 2^11893782650 is an apocalyptic number.

11893782650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11893782650 is a deficient number, since it is larger than the sum of its proper divisors (10228653172).

11893782650 is a wasteful number, since it uses less digits than its factorization.

11893782650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237875665 (or 237875660 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 50.

The spelling of 11893782650 in words is "eleven billion, eight hundred ninety-three million, seven hundred eighty-two thousand, six hundred fifty".