1652913221 has 2 divisors, whose sum is σ = 1652913222. Its totient is φ = 1652913220.

The previous prime is 1652913217. The next prime is 1652913253. The reversal of 1652913221 is 1223192561.

It is an a-pointer prime, because the next prime (1652913253) can be obtained adding 1652913221 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1481172196 + 171741025 = 38486^2 + 13105^2 .

It is an emirp because it is prime and its reverse (1223192561) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1652913221 - 2² = 1652913217 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1652913121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 826456610 + 826456611.

It is an arithmetic number, because the mean of its divisors is an integer number (826456611).

Almost surely, 2^1652913221 is an apocalyptic number.

It is an amenable number.

1652913221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1652913221 is an equidigital number, since it uses as much as digits as its factorization.

1652913221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6480, while the sum is 32.

The square root of 1652913221 is about 40656.0354806024. The cubic root of 1652913221 is about 1182.3607867258.

The spelling of 1652913221 in words is "one billion, six hundred fifty-two million, nine hundred thirteen thousand, two hundred twenty-one".