2355149509 has 2 divisors, whose sum is σ = 2355149510. Its totient is φ = 2355149508.

The previous prime is 2355149507. The next prime is 2355149539. The reversal of 2355149509 is 9059415532.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1984702500 + 370447009 = 44550^2 + 19247^2 .

It is a cyclic number.

It is not a de Polignac number, because 2355149509 - 2¹ = 2355149507 is a prime.

Together with 2355149507, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2355149507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1177574754 + 1177574755.

It is an arithmetic number, because the mean of its divisors is an integer number (1177574755).

Almost surely, 2^2355149509 is an apocalyptic number.

It is an amenable number.

2355149509 is a deficient number, since it is larger than the sum of its proper divisors (1).

2355149509 is an equidigital number, since it uses as much as digits as its factorization.

2355149509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 243000, while the sum is 43.

The square root of 2355149509 is about 48529.8826394625. The cubic root of 2355149509 is about 1330.4732913327.

The spelling of 2355149509 in words is "two billion, three hundred fifty-five million, one hundred forty-nine thousand, five hundred nine".