19583916461 has 4 divisors (see below), whose sum is σ = 19713611424. Its totient is φ = 19454221500.

The previous prime is 19583916449. The next prime is 19583916511. The reversal of 19583916461 is 16461938591.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 19583916461 - 2¹⁰ = 19583915437 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 (19583916061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64847255 + ... + 64847556.

It is an arithmetic number, because the mean of its divisors is an integer number (4928402856).

Almost surely, 2^19583916461 is an apocalyptic number.

It is an amenable number.

19583916461 is a deficient number, since it is larger than the sum of its proper divisors (129694963).

19583916461 is a wasteful number, since it uses less digits than its factorization.

19583916461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129694962.

The product of its digits is 1399680, while the sum is 53.

The spelling of 19583916461 in words is "nineteen billion, five hundred eighty-three million, nine hundred sixteen thousand, four hundred sixty-one".