7478494890 has 32 divisors (see below), whose sum is σ = 17963418816. Its totient is φ = 1992595200.

The previous prime is 7478494889. The next prime is 7478494913. The reversal of 7478494890 is 984948747.

It is a super-2 number, since 2×7478494890² (a number of 21 digits) contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 67752 + ... + 139811.

It is an arithmetic number, because the mean of its divisors is an integer number (561356838).

Almost surely, 2^7478494890 is an apocalyptic number.

7478494890 is an abundant number, since it is smaller than the sum of its proper divisors (10484923926).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7478494890 is a wasteful number, since it uses less digits than its factorization.

7478494890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208774.

The product of its (nonzero) digits is 16257024, while the sum is 60.

The square root of 7478494890 is about 86478.2914377938. The cubic root of 7478494890 is about 1955.5611482577.

The spelling of 7478494890 in words is "seven billion, four hundred seventy-eight million, four hundred ninety-four thousand, eight hundred ninety".