1816001133 has 16 divisors (see below), whose sum is σ = 2659591680. Its totient is φ = 1097079984.

The previous prime is 1816001113. The next prime is 1816001147. The reversal of 1816001133 is 3311006181.

It is not a de Polignac number, because 1816001133 - 2⁵ = 1816001101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1816001113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 691291 + ... + 693912.

It is an arithmetic number, because the mean of its divisors is an integer number (166224480).

Almost surely, 2^1816001133 is an apocalyptic number.

It is an amenable number.

1816001133 is a deficient number, since it is larger than the sum of its proper divisors (843590547).

1816001133 is a wasteful number, since it uses less digits than its factorization.

1816001133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1385248.

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 1816001133 is about 42614.5647989041. The cubic root of 1816001133 is about 1220.0342938044.

The spelling of 1816001133 in words is "one billion, eight hundred sixteen million, one thousand, one hundred thirty-three".