1379219893 has 2 divisors, whose sum is σ = 1379219894. Its totient is φ = 1379219892.

The previous prime is 1379219867. The next prime is 1379219927. The reversal of 1379219893 is 3989129731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1340804689 + 38415204 = 36617^2 + 6198^2 .

It is an emirp because it is prime and its reverse (3989129731) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1379219893 - 2²¹ = 1377122741 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1379219893.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1379219393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 689609946 + 689609947.

It is an arithmetic number, because the mean of its divisors is an integer number (689609947).

Almost surely, 2^1379219893 is an apocalyptic number.

It is an amenable number.

1379219893 is a deficient number, since it is larger than the sum of its proper divisors (1).

1379219893 is an equidigital number, since it uses as much as digits as its factorization.

1379219893 is an evil number, because the sum of its binary digits is even.

The product of its digits is 734832, while the sum is 52.

The square root of 1379219893 is about 37137.8498704489. The cubic root of 1379219893 is about 1113.1264541937.

The spelling of 1379219893 in words is "one billion, three hundred seventy-nine million, two hundred nineteen thousand, eight hundred ninety-three".