2119402345 has 4 divisors (see below), whose sum is σ = 2543282820. Its totient is φ = 1695521872.

The previous prime is 2119402343. The next prime is 2119402379. The reversal of 2119402345 is 5432049112.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1196883216 + 922519129 = 34596^2 + 30373^2 .

It is a cyclic number.

It is not a de Polignac number, because 2119402345 - 2¹ = 2119402343 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2119402343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 211940230 + ... + 211940239.

It is an arithmetic number, because the mean of its divisors is an integer number (635820705).

Almost surely, 2^2119402345 is an apocalyptic number.

It is an amenable number.

2119402345 is a deficient number, since it is larger than the sum of its proper divisors (423880475).

2119402345 is an equidigital number, since it uses as much as digits as its factorization.

2119402345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423880474.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 2119402345 is about 46036.9671568404. The cubic root of 2119402345 is about 1284.5109283583.

The spelling of 2119402345 in words is "two billion, one hundred nineteen million, four hundred two thousand, three hundred forty-five".