1968427209 has 8 divisors (see below), whose sum is σ = 2999508160. Its totient is φ = 1124815536.

The previous prime is 1968427177. The next prime is 1968427213. The reversal of 1968427209 is 9027248691.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1968427209 - 2⁵ = 1968427177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1968427259) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46867294 + ... + 46867335.

It is an arithmetic number, because the mean of its divisors is an integer number (374938520).

Almost surely, 2^1968427209 is an apocalyptic number.

It is an amenable number.

1968427209 is a deficient number, since it is larger than the sum of its proper divisors (1031080951).

1968427209 is an equidigital number, since it uses as much as digits as its factorization.

1968427209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93734639.

The product of its (nonzero) digits is 435456, while the sum is 48.

The square root of 1968427209 is about 44366.9607816447. The cubic root of 1968427209 is about 1253.2559827505.

The spelling of 1968427209 in words is "one billion, nine hundred sixty-eight million, four hundred twenty-seven thousand, two hundred nine".