2091379943 has 4 divisors (see below), whose sum is σ = 2105416200. Its totient is φ = 2077343688.

The previous prime is 2091379919. The next prime is 2091379957. The reversal of 2091379943 is 3499731902.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2091379943 - 2⁶ = 2091379879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2091373943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7017905 + ... + 7018202.

It is an arithmetic number, because the mean of its divisors is an integer number (526354050).

Almost surely, 2^2091379943 is an apocalyptic number.

2091379943 is a deficient number, since it is larger than the sum of its proper divisors (14036257).

2091379943 is a wasteful number, since it uses less digits than its factorization.

2091379943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14036256.

The product of its (nonzero) digits is 367416, while the sum is 47.

The square root of 2091379943 is about 45731.6077018948. The cubic root of 2091379943 is about 1278.8245929668.

The spelling of 2091379943 in words is "two billion, ninety-one million, three hundred seventy-nine thousand, nine hundred forty-three".