3240194891 has 4 divisors (see below), whose sum is σ = 3240480552. Its totient is φ = 3239909232.

The previous prime is 3240194873. The next prime is 3240194977. The reversal of 3240194891 is 1984910423.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1984910423 = 29 ⋅68445187.

It is a cyclic number.

It is not a de Polignac number, because 3240194891 - 2⁶ = 3240194827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3240194831) 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, 125081 + ... + 148746.

It is an arithmetic number, because the mean of its divisors is an integer number (810120138).

Almost surely, 2^3240194891 is an apocalyptic number.

3240194891 is a deficient number, since it is larger than the sum of its proper divisors (285661).

3240194891 is a wasteful number, since it uses less digits than its factorization.

3240194891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285660.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 3240194891 is about 56922.7098002195. The cubic root of 3240194891 is about 1479.7569132958.

The spelling of 3240194891 in words is "three billion, two hundred forty million, one hundred ninety-four thousand, eight hundred ninety-one".