2119978 has 16 divisors (see below), whose sum is σ = 3660480. Its totient is φ = 902016.

The previous prime is 2119969. The next prime is 2120009. The reversal of 2119978 is 8799112.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1818 + ... + 2746.

It is an arithmetic number, because the mean of its divisors is an integer number (228780).

2^2119978 is an apocalyptic number.

2119978 is a deficient number, since it is larger than the sum of its proper divisors (1540502).

2119978 is a wasteful number, since it uses less digits than its factorization.

2119978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1101.

The product of its digits is 9072, while the sum is 37.

The square root of 2119978 is about 1456.0144230055. The cubic root of 2119978 is about 128.4627214003.

The spelling of 2119978 in words is "two million, one hundred nineteen thousand, nine hundred seventy-eight".