1873274221 has 32 divisors (see below), whose sum is σ = 2377776128. Its totient is φ = 1436071680.

The previous prime is 1873274213. The next prime is 1873274269. The reversal of 1873274221 is 1224723781.

It is a 5-Lehmer number, since φ(1873274221) divides (1873274221-1)⁵.

It is a cyclic number.

It is not a de Polignac number, because 1873274221 - 2³ = 1873274213 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a deceptive number, since it divides R_1873274220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1873274281) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 911431 + ... + 913483.

It is an arithmetic number, because the mean of its divisors is an integer number (74305504).

Almost surely, 2^1873274221 is an apocalyptic number.

It is an amenable number.

1873274221 is a deficient number, since it is larger than the sum of its proper divisors (504501907).

1873274221 is a wasteful number, since it uses less digits than its factorization.

1873274221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2381.

The product of its digits is 37632, while the sum is 37.

The square root of 1873274221 is about 43281.3380222932. The cubic root of 1873274221 is about 1232.7275977448.

The spelling of 1873274221 in words is "one billion, eight hundred seventy-three million, two hundred seventy-four thousand, two hundred twenty-one".