1873341521 has 4 divisors (see below), whose sum is σ = 1873468212. Its totient is φ = 1873214832.

The previous prime is 1873341451. The next prime is 1873341539. The reversal of 1873341521 is 1251433781.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1608010000 + 265331521 = 40100^2 + 16289^2 .

It is a cyclic number.

It is not a de Polignac number, because 1873341521 - 2²⁶ = 1806232657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1873341581) 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, 37706 + ... + 71891.

It is an arithmetic number, because the mean of its divisors is an integer number (468367053).

Almost surely, 2^1873341521 is an apocalyptic number.

It is an amenable number.

1873341521 is a deficient number, since it is larger than the sum of its proper divisors (126691).

1873341521 is a wasteful number, since it uses less digits than its factorization.

1873341521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126690.

The product of its digits is 20160, while the sum is 35.

The square root of 1873341521 is about 43282.1154866534. The cubic root of 1873341521 is about 1232.7423600565.

The spelling of 1873341521 in words is "one billion, eight hundred seventy-three million, three hundred forty-one thousand, five hundred twenty-one".