1839800081 has 8 divisors (see below), whose sum is σ = 2102888064. Its totient is φ = 1576776960.

The previous prime is 1839800063. The next prime is 1839800087. The reversal of 1839800081 is 1800089381.

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 1839800081 - 2³⁰ = 766058257 is a prime.

It is a super-2 number, since 2×1839800081² = 6769728676095213122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1839800087) 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, 105236 + ... + 121466.

It is an arithmetic number, because the mean of its divisors is an integer number (262861008).

Almost surely, 2^1839800081 is an apocalyptic number.

It is an amenable number.

1839800081 is a deficient number, since it is larger than the sum of its proper divisors (263087983).

1839800081 is a wasteful number, since it uses less digits than its factorization.

1839800081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32431.

The product of its (nonzero) digits is 13824, while the sum is 38.

The square root of 1839800081 is about 42892.8907978933. The cubic root of 1839800081 is about 1225.3407534073.

The spelling of 1839800081 in words is "one billion, eight hundred thirty-nine million, eight hundred thousand, eighty-one".