5409646819 has 4 divisors (see below), whose sum is σ = 5411285944. Its totient is φ = 5408007696.

The previous prime is 5409646813. The next prime is 5409646849. The reversal of 5409646819 is 9186469045.

It is a happy number.

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 5409646819 - 2¹¹ = 5409644771 is a prime.

It is a super-2 number, since 2×5409646819² = 58528557412633637522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5409646813) 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, 814602 + ... + 821215.

It is an arithmetic number, because the mean of its divisors is an integer number (1352821486).

Almost surely, 2^5409646819 is an apocalyptic number.

5409646819 is a deficient number, since it is larger than the sum of its proper divisors (1639125).

5409646819 is a wasteful number, since it uses less digits than its factorization.

5409646819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1639124.

The product of its (nonzero) digits is 1866240, while the sum is 52.

The square root of 5409646819 is about 73550.3012842232. The cubic root of 5409646819 is about 1755.4547425375.

The spelling of 5409646819 in words is "five billion, four hundred nine million, six hundred forty-six thousand, eight hundred nineteen".