49331628389 has 4 divisors (see below), whose sum is σ = 49332716940. Its totient is φ = 49330539840.

The previous prime is 49331628371. The next prime is 49331628419. The reversal of 49331628389 is 98382613394.

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

It can be written as a sum of positive squares in 2 ways, for example, as 41514062500 + 7817565889 = 203750^2 + 88417^2 .

It is a cyclic number.

It is not a de Polignac number, because 49331628389 - 2²⁰ = 49330579813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49331628349) 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, 473204 + ... + 567965.

It is an arithmetic number, because the mean of its divisors is an integer number (12333179235).

Almost surely, 2^49331628389 is an apocalyptic number.

It is an amenable number.

49331628389 is a deficient number, since it is larger than the sum of its proper divisors (1088551).

49331628389 is a wasteful number, since it uses less digits than its factorization.

49331628389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1088550.

The product of its digits is 6718464, while the sum is 56.

The spelling of 49331628389 in words is "forty-nine billion, three hundred thirty-one million, six hundred twenty-eight thousand, three hundred eighty-nine".