2193970138 has 16 divisors (see below), whose sum is σ = 3435125760. Its totient is φ = 1048958416.

The previous prime is 2193970127. The next prime is 2193970157. The reversal of 2193970138 is 8310793912.

It is a junction number, because it is equal to n+sod(n) for n = 2193970094 and 2193970103.

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, 202503 + ... + 213061.

It is an arithmetic number, because the mean of its divisors is an integer number (214695360).

Almost surely, 2^2193970138 is an apocalyptic number.

2193970138 is a deficient number, since it is larger than the sum of its proper divisors (1241155622).

2193970138 is a wasteful number, since it uses less digits than its factorization.

2193970138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15101.

The product of its (nonzero) digits is 81648, while the sum is 43.

The square root of 2193970138 is about 46839.8349484709. The cubic root of 2193970138 is about 1299.4021191546.

The spelling of 2193970138 in words is "two billion, one hundred ninety-three million, nine hundred seventy thousand, one hundred thirty-eight".