7450220891 has 12 divisors (see below), whose sum is σ = 7882356600. Its totient is φ = 7040707488.

The previous prime is 7450220873. The next prime is 7450220923. The reversal of 7450220891 is 1980220547.

It is a de Polignac number, because none of the positive numbers 2^k-7450220891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7450220801) 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 11 ways as a sum of consecutive naturals, for example, 122420 + ... + 172878.

It is an arithmetic number, because the mean of its divisors is an integer number (656863050).

Almost surely, 2^7450220891 is an apocalyptic number.

7450220891 is a deficient number, since it is larger than the sum of its proper divisors (432135709).

7450220891 is a wasteful number, since it uses less digits than its factorization.

7450220891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50906 (or 50887 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 7450220891 is about 86314.6620858820. The cubic root of 7450220891 is about 1953.0935679109.

The spelling of 7450220891 in words is "seven billion, four hundred fifty million, two hundred twenty thousand, eight hundred ninety-one".