19494503072 has 24 divisors (see below), whose sum is σ = 41868876672. Its totient is φ = 8861137600.

The previous prime is 19494503071. The next prime is 19494503141. The reversal of 19494503072 is 27030549491.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is not an unprimeable number, because it can be changed into a prime (19494503071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27690704 + ... + 27691407.

It is an arithmetic number, because the mean of its divisors is an integer number (1744536528).

Almost surely, 2^19494503072 is an apocalyptic number.

It is an amenable number.

19494503072 is an abundant number, since it is smaller than the sum of its proper divisors (22374373600).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19494503072 is a wasteful number, since it uses less digits than its factorization.

19494503072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55382132 (or 55382124 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 44.

The spelling of 19494503072 in words is "nineteen billion, four hundred ninety-four million, five hundred three thousand, seventy-two".