1813933801 has 8 divisors (see below), whose sum is σ = 1936820160. Its totient is φ = 1694715792.

The previous prime is 1813933799. The next prime is 1813933829. The reversal of 1813933801 is 1083393181.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1813933801 - 2¹ = 1813933799 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1813933861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 916066 + ... + 918043.

It is an arithmetic number, because the mean of its divisors is an integer number (242102520).

Almost surely, 2^1813933801 is an apocalyptic number.

It is an amenable number.

1813933801 is a deficient number, since it is larger than the sum of its proper divisors (122886359).

1813933801 is a wasteful number, since it uses less digits than its factorization.

1813933801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1834175.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 1813933801 is about 42590.3017246885. The cubic root of 1813933801 is about 1219.5711564947.

The spelling of 1813933801 in words is "one billion, eight hundred thirteen million, nine hundred thirty-three thousand, eight hundred one".