19450249072 has 10 divisors (see below), whose sum is σ = 37684857608. Its totient is φ = 9725124528.

The previous prime is 19450249057. The next prime is 19450249081. The reversal of 19450249072 is 27094205491.

It is a super-2 number, since 2×19450249072² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 607820268 + ... + 607820299.

Almost surely, 2^19450249072 is an apocalyptic number.

It is an amenable number.

19450249072 is a deficient number, since it is larger than the sum of its proper divisors (18234608536).

19450249072 is a wasteful number, since it uses less digits than its factorization.

19450249072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1215640575 (or 1215640569 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 43.

The spelling of 19450249072 in words is "nineteen billion, four hundred fifty million, two hundred forty-nine thousand, seventy-two".