2109013775 has 48 divisors (see below), whose sum is σ = 3022306560. Its totient is φ = 1443801600.

The previous prime is 2109013771. The next prime is 2109013799. The reversal of 2109013775 is 5773109012.

It is a happy number.

It is a Cunningham number, because it is equal to 45924²-1.

It is not a de Polignac number, because 2109013775 - 2² = 2109013771 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2109013771) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 871367 + ... + 873783.

It is an arithmetic number, because the mean of its divisors is an integer number (62964720).

Almost surely, 2^2109013775 is an apocalyptic number.

2109013775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2109013775 is a deficient number, since it is larger than the sum of its proper divisors (913292785).

2109013775 is a wasteful number, since it uses less digits than its factorization.

2109013775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2624 (or 2619 counting only the distinct ones).

The product of its (nonzero) digits is 13230, while the sum is 35.

The square root of 2109013775 is about 45923.9999891124. Note that the first 4 decimals coincide. The cubic root of 2109013775 is about 1282.4087485914.

The spelling of 2109013775 in words is "two billion, one hundred nine million, thirteen thousand, seven hundred seventy-five".