2119343861 has 4 divisors (see below), whose sum is σ = 2187709824. Its totient is φ = 2050977900.

The previous prime is 2119343843. The next prime is 2119343887. The reversal of 2119343861 is 1683439112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2119343861 - 2⁶ = 2119343797 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 (2119346861) 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, 34182935 + ... + 34182996.

It is an arithmetic number, because the mean of its divisors is an integer number (546927456).

Almost surely, 2^2119343861 is an apocalyptic number.

It is an amenable number.

2119343861 is a deficient number, since it is larger than the sum of its proper divisors (68365963).

2119343861 is an equidigital number, since it uses as much as digits as its factorization.

2119343861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68365962.

The product of its digits is 31104, while the sum is 38.

The square root of 2119343861 is about 46036.3319672626. The cubic root of 2119343861 is about 1284.4991130733.

The spelling of 2119343861 in words is "two billion, one hundred nineteen million, three hundred forty-three thousand, eight hundred sixty-one".