7408221845 has 8 divisors (see below), whose sum is σ = 8917911864. Its totient is φ = 5907880384.

The previous prime is 7408221833. The next prime is 7408221851. The reversal of 7408221845 is 5481228047.

It can be written as a sum of positive squares in 4 ways, for example, as 203946961 + 7204274884 = 14281^2 + 84878^2 .

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 7408221845 - 2⁶ = 7408221781 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2335394 + ... + 2338563.

It is an arithmetic number, because the mean of its divisors is an integer number (1114738983).

Almost surely, 2^7408221845 is an apocalyptic number.

It is an amenable number.

7408221845 is a deficient number, since it is larger than the sum of its proper divisors (1509690019).

7408221845 is a wasteful number, since it uses less digits than its factorization.

7408221845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4674279.

The product of its (nonzero) digits is 143360, while the sum is 41.

The square root of 7408221845 is about 86071.0279071884. The cubic root of 7408221845 is about 1949.4165990894.

The spelling of 7408221845 in words is "seven billion, four hundred eight million, two hundred twenty-one thousand, eight hundred forty-five".