19450137652 has 48 divisors (see below), whose sum is σ = 38947200768. Its totient is φ = 8418971520.

The previous prime is 19450137649. The next prime is 19450137667. The reversal of 19450137652 is 25673105491.

It is a junction number, because it is equal to n+sod(n) for n = 19450137599 and 19450137608.

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, 50583 + ... + 203614.

It is an arithmetic number, because the mean of its divisors is an integer number (811400016).

Almost surely, 2^19450137652 is an apocalyptic number.

It is an amenable number.

19450137652 is an abundant number, since it is smaller than the sum of its proper divisors (19497063116).

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

19450137652 is a wasteful number, since it uses less digits than its factorization.

19450137652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254296 (or 254294 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 43.

The spelling of 19450137652 in words is "nineteen billion, four hundred fifty million, one hundred thirty-seven thousand, six hundred fifty-two".