1613948279 has 2 divisors, whose sum is σ = 1613948280.
Its totient is φ = 1613948278.
The previous prime is 1613948269. The next prime is 1613948299. The reversal of 1613948279 is 9728493161.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 1613948279 - 24 = 1613948263 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (1613948269) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 806974139 + 806974140.
It is an arithmetic number, because the mean of its divisors is an integer number (806974140).
Almost surely, 21613948279 is an apocalyptic number.
1613948279 is a deficient number, since it is larger than the sum of its proper divisors (1).
1613948279 is an equidigital number, since it uses as much as digits as its factorization.
1613948279 is an evil number, because the sum of its binary digits is even.
The product of its digits is 653184, while the sum is 50.
The square root of 1613948279 is about 40173.9751456089.
The cubic root of 1613948279 is about 1172.9960177074.
The spelling of 1613948279 in words is "one billion, six hundred thirteen million, nine hundred forty-eight thousand, two hundred seventy-nine".