19649384830 has 16 divisors (see below), whose sum is σ = 36036231264. Its totient is φ = 7711456480.

The previous prime is 19649384827. The next prime is 19649384897. The reversal of 19649384830 is 3848394691.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18536626 + ... + 18537685.

It is an arithmetic number, because the mean of its divisors is an integer number (2252264454).

Almost surely, 2^19649384830 is an apocalyptic number.

19649384830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19649384830 is a deficient number, since it is larger than the sum of its proper divisors (16386846434).

19649384830 is a wasteful number, since it uses less digits than its factorization.

19649384830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37074371.

The product of its (nonzero) digits is 4478976, while the sum is 55.

The spelling of 19649384830 in words is "nineteen billion, six hundred forty-nine million, three hundred eighty-four thousand, eight hundred thirty".