2194519690 has 16 divisors (see below), whose sum is σ = 4309238880. Its totient is φ = 798007120.

The previous prime is 2194519687. The next prime is 2194519721. The reversal of 2194519690 is 969154912.

It is a happy number.

It is a super-2 number, since 2×2194519690² = 9631833339595392200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2194519690.

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, 9974980 + ... + 9975199.

It is an arithmetic number, because the mean of its divisors is an integer number (269327430).

Almost surely, 2^2194519690 is an apocalyptic number.

2194519690 is a deficient number, since it is larger than the sum of its proper divisors (2114719190).

2194519690 is a wasteful number, since it uses less digits than its factorization.

2194519690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19950197.

The product of its (nonzero) digits is 174960, while the sum is 46.

The square root of 2194519690 is about 46845.7008699838. The cubic root of 2194519690 is about 1299.5106027672.

The spelling of 2194519690 in words is "two billion, one hundred ninety-four million, five hundred nineteen thousand, six hundred ninety".