1828971311 has 4 divisors (see below), whose sum is σ = 1829102952. Its totient is φ = 1828839672.

The previous prime is 1828971307. The next prime is 1828971379. The reversal of 1828971311 is 1131798281.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1131798281 = 809 ⋅1399009.

It is a cyclic number.

It is not a de Polignac number, because 1828971311 - 2² = 1828971307 is a prime.

It is a super-2 number, since 2×1828971311² = 6690272112922117442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42140 + ... + 73713.

It is an arithmetic number, because the mean of its divisors is an integer number (457275738).

Almost surely, 2^1828971311 is an apocalyptic number.

1828971311 is a deficient number, since it is larger than the sum of its proper divisors (131641).

1828971311 is a wasteful number, since it uses less digits than its factorization.

1828971311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131640.

The product of its digits is 24192, while the sum is 41.

The square root of 1828971311 is about 42766.4741473973. The cubic root of 1828971311 is about 1222.9319678495.

The spelling of 1828971311 in words is "one billion, eight hundred twenty-eight million, nine hundred seventy-one thousand, three hundred eleven".