815283379 has 2 divisors, whose sum is σ = 815283380. Its totient is φ = 815283378.

The previous prime is 815283373. The next prime is 815283421. The reversal of 815283379 is 973382518.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 815283379 - 2⁷ = 815283251 is a prime.

It is not a weakly prime, because it can be changed into another prime (815283373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 407641689 + 407641690.

It is an arithmetic number, because the mean of its divisors is an integer number (407641690).

Almost surely, 2^815283379 is an apocalyptic number.

815283379 is a deficient number, since it is larger than the sum of its proper divisors (1).

815283379 is an equidigital number, since it uses as much as digits as its factorization.

815283379 is an evil number, because the sum of its binary digits is even.

The product of its digits is 362880, while the sum is 46.

The square root of 815283379 is about 28553.1675825993. The cubic root of 815283379 is about 934.1921125392.

The spelling of 815283379 in words is "eight hundred fifteen million, two hundred eighty-three thousand, three hundred seventy-nine".