1811372214 has 32 divisors (see below), whose sum is σ = 3708117504. Its totient is φ = 589723200.

The previous prime is 1811372207. The next prime is 1811372221. The reversal of 1811372214 is 4122731181.

It is an interprime number because it is at equal distance from previous prime (1811372207) and next prime (1811372221).

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25039 + ... + 65189.

It is an arithmetic number, because the mean of its divisors is an integer number (115878672).

Almost surely, 2^1811372214 is an apocalyptic number.

1811372214 is an abundant number, since it is smaller than the sum of its proper divisors (1896745290).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1811372214 is a wasteful number, since it uses less digits than its factorization.

1811372214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40332.

The product of its digits is 2688, while the sum is 30.

The square root of 1811372214 is about 42560.2186789495. The cubic root of 1811372214 is about 1218.9968045287.

The spelling of 1811372214 in words is "one billion, eight hundred eleven million, three hundred seventy-two thousand, two hundred fourteen".