1965919055 has 8 divisors (see below), whose sum is σ = 2409296832. Its totient is φ = 1539272608.

The previous prime is 1965919051. The next prime is 1965919057. The reversal of 1965919055 is 5509195691.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1965919055 - 2² = 1965919051 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1965918994 and 1965919012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1965919051) 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, 4182572 + ... + 4183041.

It is an arithmetic number, because the mean of its divisors is an integer number (301162104).

Almost surely, 2^1965919055 is an apocalyptic number.

1965919055 is a deficient number, since it is larger than the sum of its proper divisors (443377777).

1965919055 is an equidigital number, since it uses as much as digits as its factorization.

1965919055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8365665.

The product of its (nonzero) digits is 546750, while the sum is 50.

The square root of 1965919055 is about 44338.6857608567. The cubic root of 1965919055 is about 1252.7234603017.

The spelling of 1965919055 in words is "one billion, nine hundred sixty-five million, nine hundred nineteen thousand, fifty-five".