7869643955 has 8 divisors (see below), whose sum is σ = 9445490352. Its totient is φ = 6294436768.

The previous prime is 7869643939. The next prime is 7869643979. The reversal of 7869643955 is 5593469687.

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

It is a cyclic number.

It is not a de Polignac number, because 7869643955 - 2⁴ = 7869643939 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 132284 + ... + 182313.

It is an arithmetic number, because the mean of its divisors is an integer number (1180686294).

Almost surely, 2^7869643955 is an apocalyptic number.

7869643955 is a deficient number, since it is larger than the sum of its proper divisors (1575846397).

7869643955 is a wasteful number, since it uses less digits than its factorization.

7869643955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319605.

The product of its digits is 48988800, while the sum is 62.

The square root of 7869643955 is about 88711.0137187035. The cubic root of 7869643955 is about 1989.0774538328.

The spelling of 7869643955 in words is "seven billion, eight hundred sixty-nine million, six hundred forty-three thousand, nine hundred fifty-five".