3642091 has 4 divisors (see below), whose sum is σ = 3833800. Its totient is φ = 3450384.

The previous prime is 3642061. The next prime is 3642101. The reversal of 3642091 is 1902463.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3642091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3642031) 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, 95826 + ... + 95863.

It is an arithmetic number, because the mean of its divisors is an integer number (958450).

Almost surely, 2^3642091 is an apocalyptic number.

3642091 is a deficient number, since it is larger than the sum of its proper divisors (191709).

3642091 is a wasteful number, since it uses less digits than its factorization.

3642091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191708.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 3642091 is about 1908.4263150565. The cubic root of 3642091 is about 153.8568833991.

The spelling of 3642091 in words is "three million, six hundred forty-two thousand, ninety-one".