2119778 has 4 divisors (see below), whose sum is σ = 3179670. Its totient is φ = 1059888.

The previous prime is 2119763. The next prime is 2119783. The reversal of 2119778 is 8779112.

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

It can be written as a sum of positive squares in only one way, i.e., 1385329 + 734449 = 1177^2 + 857^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 529943 + ... + 529946.

2^2119778 is an apocalyptic number.

2119778 is a deficient number, since it is larger than the sum of its proper divisors (1059892).

2119778 is a wasteful number, since it uses less digits than its factorization.

2119778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1059891.

The product of its digits is 7056, while the sum is 35.

The square root of 2119778 is about 1455.9457407472. The cubic root of 2119778 is about 128.4586815231.

The spelling of 2119778 in words is "two million, one hundred nineteen thousand, seven hundred seventy-eight".