3652381 has 4 divisors (see below), whose sum is σ = 3751132. Its totient is φ = 3553632.

The previous prime is 3652373. The next prime is 3652387. The reversal of 3652381 is 1832563.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1832563 = 79 ⋅23197.

It can be written as a sum of positive squares in 2 ways, for example, as 3367225 + 285156 = 1835^2 + 534^2 .

It is a cyclic number.

It is not a de Polignac number, because 3652381 - 2³ = 3652373 is a prime.

It is a super-2 number, since 2×3652381² = 26679773938322, which contains 22 as substring.

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

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3652387) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49320 + ... + 49393.

It is an arithmetic number, because the mean of its divisors is an integer number (937783).

Almost surely, 2^3652381 is an apocalyptic number.

It is an amenable number.

3652381 is a deficient number, since it is larger than the sum of its proper divisors (98751).

3652381 is an equidigital number, since it uses as much as digits as its factorization.

3652381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98750.

The product of its digits is 4320, while the sum is 28.

The square root of 3652381 is about 1911.1203520448. The cubic root of 3652381 is about 154.0016444419.

The spelling of 3652381 in words is "three million, six hundred fifty-two thousand, three hundred eighty-one".