19471994030 has 32 divisors (see below), whose sum is σ = 36339192000. Its totient is φ = 7503419392.

The previous prime is 19471993999. The next prime is 19471994041. The reversal of 19471994030 is 3049917491.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55439 + ... + 204981.

It is an arithmetic number, because the mean of its divisors is an integer number (1135599750).

Almost surely, 2^19471994030 is an apocalyptic number.

19471994030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19471994030 is a deficient number, since it is larger than the sum of its proper divisors (16867197970).

19471994030 is a wasteful number, since it uses less digits than its factorization.

19471994030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150028.

The product of its (nonzero) digits is 244944, while the sum is 47.

The spelling of 19471994030 in words is "nineteen billion, four hundred seventy-one million, nine hundred ninety-four thousand, thirty".