3143494891 has 4 divisors (see below), whose sum is σ = 3244897984. Its totient is φ = 3042091800.

The previous prime is 3143494867. The next prime is 3143494903. The reversal of 3143494891 is 1984943413.

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

It is a cyclic number.

It is not a de Polignac number, because 3143494891 - 2⁵ = 3143494859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3143494841) 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, 50701500 + ... + 50701561.

It is an arithmetic number, because the mean of its divisors is an integer number (811224496).

Almost surely, 2^3143494891 is an apocalyptic number.

3143494891 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

3143494891 is a deficient number, since it is larger than the sum of its proper divisors (101403093).

3143494891 is a wasteful number, since it uses less digits than its factorization.

3143494891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101403092.

The product of its digits is 373248, while the sum is 46.

The square root of 3143494891 is about 56066.8787342402. The cubic root of 3143494891 is about 1464.8874318567.

The spelling of 3143494891 in words is "three billion, one hundred forty-three million, four hundred ninety-four thousand, eight hundred ninety-one".