1348574221 has 4 divisors (see below), whose sum is σ = 1348657852. Its totient is φ = 1348490592.

The previous prime is 1348574189. The next prime is 1348574233. The reversal of 1348574221 is 1224758431.

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 can be written as a sum of positive squares in 2 ways, for example, as 999444996 + 349129225 = 31614^2 + 18685^2 .

It is a cyclic number.

It is not a de Polignac number, because 1348574221 - 2⁵ = 1348574189 is a prime.

It is a super-3 number, since 3×1348574221³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1348574251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9090 + ... + 52723.

It is an arithmetic number, because the mean of its divisors is an integer number (337164463).

Almost surely, 2^1348574221 is an apocalyptic number.

It is an amenable number.

1348574221 is a deficient number, since it is larger than the sum of its proper divisors (83631).

1348574221 is an equidigital number, since it uses as much as digits as its factorization.

1348574221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83630.

The product of its digits is 53760, while the sum is 37.

The square root of 1348574221 is about 36722.9386215210. The cubic root of 1348574221 is about 1104.8202299636.

The spelling of 1348574221 in words is "one billion, three hundred forty-eight million, five hundred seventy-four thousand, two hundred twenty-one".