7828952509 has 12 divisors (see below), whose sum is σ = 9318945504. Its totient is φ = 6554470104.

The previous prime is 7828952473. The next prime is 7828952533. The reversal of 7828952509 is 9052598287.

It is a happy number.

It is not a de Polignac number, because 7828952509 - 2⁹ = 7828951997 is a prime.

It is a super-2 number, since 2×7828952509² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7828952509.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7828952809) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1855737 + ... + 1859950.

It is an arithmetic number, because the mean of its divisors is an integer number (776578792).

Almost surely, 2^7828952509 is an apocalyptic number.

It is an amenable number.

7828952509 is a deficient number, since it is larger than the sum of its proper divisors (1489992995).

7828952509 is a wasteful number, since it uses less digits than its factorization.

7828952509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3715744 (or 3715737 counting only the distinct ones).

The product of its (nonzero) digits is 3628800, while the sum is 55.

The square root of 7828952509 is about 88481.3681460679. The cubic root of 7828952509 is about 1985.6432306005.

The spelling of 7828952509 in words is "seven billion, eight hundred twenty-eight million, nine hundred fifty-two thousand, five hundred nine".