619744490453 has 6 divisors (see below), whose sum is σ = 681206754102. Its totient is φ = 563404082120.

The previous prime is 619744490447. The next prime is 619744490479. The reversal of 619744490453 is 354094447916.

619744490453 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 563097158404 + 56647332049 = 750398^2 + 238007^2 .

It is a de Polignac number, because none of the positive numbers 2^k-619744490453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (619744496453) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2560927526 + ... + 2560927767.

It is an arithmetic number, because the mean of its divisors is an integer number (113534459017).

Almost surely, 2^619744490453 is an apocalyptic number.

It is an amenable number.

619744490453 is a deficient number, since it is larger than the sum of its proper divisors (61462263649).

619744490453 is a wasteful number, since it uses less digits than its factorization.

619744490453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5121855315 (or 5121855304 counting only the distinct ones).

The product of its (nonzero) digits is 13063680, while the sum is 56.

The spelling of 619744490453 in words is "six hundred nineteen billion, seven hundred forty-four million, four hundred ninety thousand, four hundred fifty-three".