1681414279 has 4 divisors (see below), whose sum is σ = 1684839240. Its totient is φ = 1677989320.

The previous prime is 1681414247. The next prime is 1681414297. The reversal of 1681414279 is 9724141861.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9724141861 = 7 ⋅1389163123.

It is a cyclic number.

It is not a de Polignac number, because 1681414279 - 2⁵ = 1681414247 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 (1681414979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1711744 + ... + 1712725.

It is an arithmetic number, because the mean of its divisors is an integer number (421209810).

Almost surely, 2^1681414279 is an apocalyptic number.

1681414279 is a deficient number, since it is larger than the sum of its proper divisors (3424961).

1681414279 is an equidigital number, since it uses as much as digits as its factorization.

1681414279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3424960.

The product of its digits is 96768, while the sum is 43.

The square root of 1681414279 is about 41005.0518716902. The cubic root of 1681414279 is about 1189.1178828614.

The spelling of 1681414279 in words is "one billion, six hundred eighty-one million, four hundred fourteen thousand, two hundred seventy-nine".