3651819 has 8 divisors (see below), whose sum is σ = 5125440. Its totient is φ = 2306376.

The previous prime is 3651811. The next prime is 3651839. The reversal of 3651819 is 9181563.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3651819 - 2³ = 3651811 is a prime.

It is a super-2 number, since 2×3651819² = 26671564017522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3651819.

It is not an unprimeable number, because it can be changed into a prime (3651811) 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, 31977 + ... + 32090.

It is an arithmetic number, because the mean of its divisors is an integer number (640680).

Almost surely, 2^3651819 is an apocalyptic number.

3651819 is a deficient number, since it is larger than the sum of its proper divisors (1473621).

3651819 is a wasteful number, since it uses less digits than its factorization.

3651819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64089.

The product of its digits is 6480, while the sum is 33.

The square root of 3651819 is about 1910.9733122155. The cubic root of 3651819 is about 153.9937451780.

The spelling of 3651819 in words is "three million, six hundred fifty-one thousand, eight hundred nineteen".