1836336381 has 16 divisors (see below), whose sum is σ = 2743226688. Its totient is φ = 1082851200.

The previous prime is 1836336349. The next prime is 1836336401.

1836336381 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 1836336381 - 2⁵ = 1836336349 is a prime.

It is a super-2 number, since 2×1836336381² = 6744262608368354322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1836336581) 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, 750760 + ... + 753201.

It is an arithmetic number, because the mean of its divisors is an integer number (171451668).

Almost surely, 2^1836336381 is an apocalyptic number.

1836336381 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1836336381 is a deficient number, since it is larger than the sum of its proper divisors (906890307).

1836336381 is a wasteful number, since it uses less digits than its factorization.

1836336381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1504012.

The product of its digits is 186624, while the sum is 42.

The square root of 1836336381 is about 42852.4956216088. The cubic root of 1836336381 is about 1224.5713076658.

The spelling of 1836336381 in words is "one billion, eight hundred thirty-six million, three hundred thirty-six thousand, three hundred eighty-one".