1048634221 has 2 divisors, whose sum is σ = 1048634222. Its totient is φ = 1048634220.

The previous prime is 1048634207. The next prime is 1048634227. The reversal of 1048634221 is 1224368401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 967832100 + 80802121 = 31110^2 + 8989^2 .

It is an emirp because it is prime and its reverse (1224368401) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1048634221 - 2⁵ = 1048634189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1048634227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 524317110 + 524317111.

It is an arithmetic number, because the mean of its divisors is an integer number (524317111).

Almost surely, 2^1048634221 is an apocalyptic number.

It is an amenable number.

1048634221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1048634221 is an equidigital number, since it uses as much as digits as its factorization.

1048634221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 1048634221 is about 32382.6222069801. The cubic root of 1048634221 is about 1015.9554758244.

The spelling of 1048634221 in words is "one billion, forty-eight million, six hundred thirty-four thousand, two hundred twenty-one".