3918536 has 8 divisors (see below), whose sum is σ = 7347270. Its totient is φ = 1959264.

The previous prime is 3918529. The next prime is 3918539. The reversal of 3918536 is 6358193.

It can be written as a sum of positive squares in only one way, i.e., 3880900 + 37636 = 1970^2 + 194^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 3918496 and 3918505.

It is not an unprimeable number, because it can be changed into a prime (3918539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 244901 + ... + 244916.

Almost surely, 2^3918536 is an apocalyptic number.

It is an amenable number.

3918536 is a deficient number, since it is larger than the sum of its proper divisors (3428734).

3918536 is a wasteful number, since it uses less digits than its factorization.

3918536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489823 (or 489819 counting only the distinct ones).

The product of its digits is 19440, while the sum is 35.

The square root of 3918536 is about 1979.5292369652. The cubic root of 3918536 is about 157.6550719264.

The spelling of 3918536 in words is "three million, nine hundred eighteen thousand, five hundred thirty-six".