3531618 has 12 divisors (see below), whose sum is σ = 7651878. Its totient is φ = 1177200.

The previous prime is 3531601. The next prime is 3531623. The reversal of 3531618 is 8161353.

It can be written as a sum of positive squares in only one way, i.e., 2169729 + 1361889 = 1473^2 + 1167^2 .

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 3531591 and 3531600.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 98083 + ... + 98118.

Almost surely, 2^3531618 is an apocalyptic number.

3531618 is an abundant number, since it is smaller than the sum of its proper divisors (4120260).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3531618 is a wasteful number, since it uses less digits than its factorization.

3531618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196209 (or 196206 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 3531618 is about 1879.2599607292. The cubic root of 3531618 is about 152.2852733596.

The spelling of 3531618 in words is "three million, five hundred thirty-one thousand, six hundred eighteen".