652944191 has 2 divisors, whose sum is σ = 652944192. Its totient is φ = 652944190.

The previous prime is 652944161. The next prime is 652944221. The reversal of 652944191 is 191449256.

It is a balanced prime because it is at equal distance from previous prime (652944161) and next prime (652944221).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-652944191 is a prime.

It is a super-2 number, since 2×652944191² = 852672233121288962, which contains 22 as substring.

It is equal to p_33938555 and since 652944191 and 33938555 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (652944161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 326472095 + 326472096.

It is an arithmetic number, because the mean of its divisors is an integer number (326472096).

Almost surely, 2^652944191 is an apocalyptic number.

652944191 is a deficient number, since it is larger than the sum of its proper divisors (1).

652944191 is an equidigital number, since it uses as much as digits as its factorization.

652944191 is an evil number, because the sum of its binary digits is even.

The product of its digits is 77760, while the sum is 41.

The square root of 652944191 is about 25552.7726675600. The cubic root of 652944191 is about 867.5450193813.

The spelling of 652944191 in words is "six hundred fifty-two million, nine hundred forty-four thousand, one hundred ninety-one".