7948928551 has 4 divisors (see below), whose sum is σ = 7956639504. Its totient is φ = 7941217600.

The previous prime is 7948928539. The next prime is 7948928567. The reversal of 7948928551 is 1558298497.

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

It is a cyclic number.

It is not a de Polignac number, because 7948928551 - 2³¹ = 5801444903 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 (7948928591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3853930 + ... + 3855991.

It is an arithmetic number, because the mean of its divisors is an integer number (1989159876).

Almost surely, 2^7948928551 is an apocalyptic number.

7948928551 is a deficient number, since it is larger than the sum of its proper divisors (7710953).

7948928551 is a wasteful number, since it uses less digits than its factorization.

7948928551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7710952.

The product of its digits is 7257600, while the sum is 58.

The square root of 7948928551 is about 89156.7639105413. The cubic root of 7948928551 is about 1995.7349570864.

The spelling of 7948928551 in words is "seven billion, nine hundred forty-eight million, nine hundred twenty-eight thousand, five hundred fifty-one".