3700181 has 4 divisors (see below), whose sum is σ = 3704652. Its totient is φ = 3695712.

The previous prime is 3700159. The next prime is 3700187. The reversal of 3700181 is 1810073.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1810073 = 19 ⋅95267.

It can be written as a sum of positive squares in 2 ways, for example, as 2669956 + 1030225 = 1634^2 + 1015^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3700181 is a prime.

It is a super-2 number, since 2×3700181² = 27382678865522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3700187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 590 + ... + 2783.

It is an arithmetic number, because the mean of its divisors is an integer number (926163).

Almost surely, 2^3700181 is an apocalyptic number.

It is an amenable number.

3700181 is a deficient number, since it is larger than the sum of its proper divisors (4471).

3700181 is a wasteful number, since it uses less digits than its factorization.

3700181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4470.

The product of its (nonzero) digits is 168, while the sum is 20.

The square root of 3700181 is about 1923.5854543014. The cubic root of 3700181 is about 154.6705594005.

The spelling of 3700181 in words is "three million, seven hundred thousand, one hundred eighty-one".