3698518 has 4 divisors (see below), whose sum is σ = 5547780. Its totient is φ = 1849258.

The previous prime is 3698509. The next prime is 3698531. The reversal of 3698518 is 8158963.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8158963 = 17 ⋅479939.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 924628 + ... + 924631.

It is an arithmetic number, because the mean of its divisors is an integer number (1386945).

Almost surely, 2^3698518 is an apocalyptic number.

3698518 is a deficient number, since it is larger than the sum of its proper divisors (1849262).

3698518 is a wasteful number, since it uses less digits than its factorization.

3698518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1849261.

The product of its digits is 51840, while the sum is 40.

The square root of 3698518 is about 1923.1531400281. The cubic root of 3698518 is about 154.6473843464.

The spelling of 3698518 in words is "three million, six hundred ninety-eight thousand, five hundred eighteen".