652458109 has 2 divisors, whose sum is σ = 652458110. Its totient is φ = 652458108.

The previous prime is 652458097. The next prime is 652458137. The reversal of 652458109 is 901854256.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 408161209 + 244296900 = 20203^2 + 15630^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-652458109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (652458139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 326229054 + 326229055.

It is an arithmetic number, because the mean of its divisors is an integer number (326229055).

Almost surely, 2^652458109 is an apocalyptic number.

It is an amenable number.

652458109 is a deficient number, since it is larger than the sum of its proper divisors (1).

652458109 is an equidigital number, since it uses as much as digits as its factorization.

652458109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 86400, while the sum is 40.

The square root of 652458109 is about 25543.2595609879. The cubic root of 652458109 is about 867.3296856611.

The spelling of 652458109 in words is "six hundred fifty-two million, four hundred fifty-eight thousand, one hundred nine".