1219712983 has 4 divisors (see below), whose sum is σ = 1219782888. Its totient is φ = 1219643080.

The previous prime is 1219712939. The next prime is 1219712993. The reversal of 1219712983 is 3892179121.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1219712983 - 2²⁹ = 682842071 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 (1219712993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15393 + ... + 51733.

It is an arithmetic number, because the mean of its divisors is an integer number (304945722).

Almost surely, 2^1219712983 is an apocalyptic number.

1219712983 is a deficient number, since it is larger than the sum of its proper divisors (69905).

1219712983 is an equidigital number, since it uses as much as digits as its factorization.

1219712983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69904.

The product of its digits is 54432, while the sum is 43.

The square root of 1219712983 is about 34924.3895150653. The cubic root of 1219712983 is about 1068.4459295338.

The spelling of 1219712983 in words is "one billion, two hundred nineteen million, seven hundred twelve thousand, nine hundred eighty-three".