19418449452 has 48 divisors (see below), whose sum is σ = 45963590400. Its totient is φ = 6380016192.

The previous prime is 19418449451. The next prime is 19418449469. The reversal of 19418449452 is 25494481491.

It is a junction number, because it is equal to n+sod(n) for n = 19418449395 and 19418449404.

It is not an unprimeable number, because it can be changed into a prime (19418449451) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 217518 + ... + 293514.

It is an arithmetic number, because the mean of its divisors is an integer number (957574800).

Almost surely, 2^19418449452 is an apocalyptic number.

19418449452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19418449452 is an abundant number, since it is smaller than the sum of its proper divisors (26545140948).

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

19418449452 is a wasteful number, since it uses less digits than its factorization.

19418449452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76310 (or 76308 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 51.

The spelling of 19418449452 in words is "nineteen billion, four hundred eighteen million, four hundred forty-nine thousand, four hundred fifty-two".