7828499197 has 4 divisors (see below), whose sum is σ = 7862098140. Its totient is φ = 7794900256.

The previous prime is 7828499179. The next prime is 7828499209. The reversal of 7828499197 is 7919948287.

It is a happy number.

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 4982383396 + 2846115801 = 70586^2 + 53349^2 .

It is a cyclic number.

It is not a de Polignac number, because 7828499197 - 2²³ = 7820110589 is a prime.

It is a super-2 number, since 2×7828499197² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7828499297) 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, 16799122 + ... + 16799587.

It is an arithmetic number, because the mean of its divisors is an integer number (1965524535).

Almost surely, 2^7828499197 is an apocalyptic number.

It is an amenable number.

7828499197 is a deficient number, since it is larger than the sum of its proper divisors (33598943).

7828499197 is a wasteful number, since it uses less digits than its factorization.

7828499197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33598942.

The product of its digits is 18289152, while the sum is 64.

The square root of 7828499197 is about 88478.8064849430. The cubic root of 7828499197 is about 1985.6049056234.

The spelling of 7828499197 in words is "seven billion, eight hundred twenty-eight million, four hundred ninety-nine thousand, one hundred ninety-seven".