7828908913 has 8 divisors (see below), whose sum is σ = 8948568320. Its totient is φ = 6709560480.

The previous prime is 7828908869. The next prime is 7828908931. The reversal of 7828908913 is 3198098287.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7828908913 - 2⁹ = 7828908401 is a prime.

It is a super-2 number, since 2×7828908913² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7828908943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21033 + ... + 126886.

It is an arithmetic number, because the mean of its divisors is an integer number (1118571040).

Almost surely, 2^7828908913 is an apocalyptic number.

It is an amenable number.

7828908913 is a deficient number, since it is larger than the sum of its proper divisors (1119659407).

7828908913 is a wasteful number, since it uses less digits than its factorization.

7828908913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155487.

The product of its (nonzero) digits is 1741824, while the sum is 55.

The square root of 7828908913 is about 88481.1217887748. The cubic root of 7828908913 is about 1985.6395448685.

The spelling of 7828908913 in words is "seven billion, eight hundred twenty-eight million, nine hundred eight thousand, nine hundred thirteen".