19450137653 has 8 divisors (see below), whose sum is σ = 19486262400. Its totient is φ = 19414048608.

The previous prime is 19450137649. The next prime is 19450137667. The reversal of 19450137653 is 35673105491.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 19450137653 - 2² = 19450137649 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19450137643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1237478 + ... + 1253096.

It is an arithmetic number, because the mean of its divisors is an integer number (2435782800).

Almost surely, 2^19450137653 is an apocalyptic number.

It is an amenable number.

19450137653 is a deficient number, since it is larger than the sum of its proper divisors (36124747).

19450137653 is a wasteful number, since it uses less digits than its factorization.

19450137653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17851.

The product of its (nonzero) digits is 340200, while the sum is 44.

The spelling of 19450137653 in words is "nineteen billion, four hundred fifty million, one hundred thirty-seven thousand, six hundred fifty-three".