1827473999 has 4 divisors (see below), whose sum is σ = 1968048936. Its totient is φ = 1686899064.

The previous prime is 1827473987. The next prime is 1827474031. The reversal of 1827473999 is 9993747281.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1827473999 - 2¹⁶ = 1827408463 is a prime.

It is a super-2 number, since 2×1827473999² = 6679322434042104002, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1827473959) by changing a digit.

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, 70287449 + ... + 70287474.

It is an arithmetic number, because the mean of its divisors is an integer number (492012234).

Almost surely, 2^1827473999 is an apocalyptic number.

1827473999 is a deficient number, since it is larger than the sum of its proper divisors (140574937).

1827473999 is a wasteful number, since it uses less digits than its factorization.

1827473999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140574936.

The product of its digits is 6858432, while the sum is 59.

The square root of 1827473999 is about 42748.9648880531. The cubic root of 1827473999 is about 1222.5981534963.

The spelling of 1827473999 in words is "one billion, eight hundred twenty-seven million, four hundred seventy-three thousand, nine hundred ninety-nine".