5131446646 has 4 divisors (see below), whose sum is σ = 7697169972. Its totient is φ = 2565723322.

The previous prime is 5131446637. The next prime is 5131446653. The reversal of 5131446646 is 6466441315.

It is a happy number.

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

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 5131446599 and 5131446608.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1282861660 + ... + 1282861663.

It is an arithmetic number, because the mean of its divisors is an integer number (1924292493).

Almost surely, 2^5131446646 is an apocalyptic number.

5131446646 is a deficient number, since it is larger than the sum of its proper divisors (2565723326).

5131446646 is a wasteful number, since it uses less digits than its factorization.

5131446646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2565723325.

The product of its digits is 207360, while the sum is 40.

The square root of 5131446646 is about 71634.1164948658. The cubic root of 5131446646 is about 1724.8312257757.

The spelling of 5131446646 in words is "five billion, one hundred thirty-one million, four hundred forty-six thousand, six hundred forty-six".