1779253313 has 2 divisors, whose sum is σ = 1779253314. Its totient is φ = 1779253312.

The previous prime is 1779253279. The next prime is 1779253319. The reversal of 1779253313 is 3133529771.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1756280464 + 22972849 = 41908^2 + 4793^2 .

It is an emirp because it is prime and its reverse (3133529771) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1779253313 - 2¹² = 1779249217 is a prime.

It is not a weakly prime, because it can be changed into another prime (1779253319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 889626656 + 889626657.

It is an arithmetic number, because the mean of its divisors is an integer number (889626657).

Almost surely, 2^1779253313 is an apocalyptic number.

It is an amenable number.

1779253313 is a deficient number, since it is larger than the sum of its proper divisors (1).

1779253313 is an equidigital number, since it uses as much as digits as its factorization.

1779253313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 119070, while the sum is 41.

The square root of 1779253313 is about 42181.1962016252. The cubic root of 1779253313 is about 1211.7487890528.

The spelling of 1779253313 in words is "one billion, seven hundred seventy-nine million, two hundred fifty-three thousand, three hundred thirteen".