7488379891 has 4 divisors (see below), whose sum is σ = 7488554400. Its totient is φ = 7488205384.

The previous prime is 7488379849. The next prime is 7488379949. The reversal of 7488379891 is 1989738847.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 7488379891 - 2¹³ = 7488371699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7488379831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26865 + ... + 125293.

It is an arithmetic number, because the mean of its divisors is an integer number (1872138600).

Almost surely, 2^7488379891 is an apocalyptic number.

7488379891 is a deficient number, since it is larger than the sum of its proper divisors (174509).

7488379891 is an equidigital number, since it uses as much as digits as its factorization.

7488379891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174508.

The product of its digits is 24385536, while the sum is 64.

The square root of 7488379891 is about 86535.4256417567. The cubic root of 7488379891 is about 1956.4223827434.

The spelling of 7488379891 in words is "seven billion, four hundred eighty-eight million, three hundred seventy-nine thousand, eight hundred ninety-one".