7428782837 has 10 divisors (see below), whose sum is σ = 8666400438. Its totient is φ = 6367526088.

The previous prime is 7428782821. The next prime is 7428782863. The reversal of 7428782837 is 7382878247.

It can be written as a sum of positive squares in only one way, i.e., 5738668516 + 1690114321 = 75754^2 + 41111^2 .

It is not a de Polignac number, because 7428782837 - 2⁴ = 7428782821 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 (7428782897) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1544618 + ... + 1549419.

Almost surely, 2^7428782837 is an apocalyptic number.

It is an amenable number.

7428782837 is a deficient number, since it is larger than the sum of its proper divisors (1237617601).

7428782837 is an frugal number, since it uses more digits than its factorization.

7428782837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3094065 (or 3094044 counting only the distinct ones).

The product of its digits is 8429568, while the sum is 56.

The square root of 7428782837 is about 86190.3871496120. The cubic root of 7428782837 is about 1951.2184221397.

The spelling of 7428782837 in words is "seven billion, four hundred twenty-eight million, seven hundred eighty-two thousand, eight hundred thirty-seven".