1836381 has 8 divisors (see below), whose sum is σ = 2457504. Its totient is φ = 1219760.

The previous prime is 1836379. The next prime is 1836383.

1836381 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (1836379) and next prime (1836383).

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 1836381 - 2¹ = 1836379 is a prime.

It is a super-2 number, since 2×1836381² = 6744590354322, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1836383) 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, 15 + ... + 1916.

It is an arithmetic number, because the mean of its divisors is an integer number (307188).

2^1836381 is an apocalyptic number.

It is an amenable number.

1836381 is a deficient number, since it is larger than the sum of its proper divisors (621123).

1836381 is a wasteful number, since it uses less digits than its factorization.

1836381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2251.

The product of its digits is 3456, while the sum is 30.

The square root of 1836381 is about 1355.1313589464. The cubic root of 1836381 is about 122.4581225730.

The spelling of 1836381 in words is "one million, eight hundred thirty-six thousand, three hundred eighty-one".