2193930761 has 4 divisors (see below), whose sum is σ = 2393379024. Its totient is φ = 1994482500.

The previous prime is 2193930751. The next prime is 2193930769. The reversal of 2193930761 is 1670393912.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2193930761 - 2¹⁴ = 2193914377 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2193930769) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99724115 + ... + 99724136.

It is an arithmetic number, because the mean of its divisors is an integer number (598344756).

Almost surely, 2^2193930761 is an apocalyptic number.

It is an amenable number.

2193930761 is a deficient number, since it is larger than the sum of its proper divisors (199448263).

2193930761 is a wasteful number, since it uses less digits than its factorization.

2193930761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199448262.

The product of its (nonzero) digits is 61236, while the sum is 41.

The square root of 2193930761 is about 46839.4146099201. The cubic root of 2193930761 is about 1299.3943452926.

The spelling of 2193930761 in words is "two billion, one hundred ninety-three million, nine hundred thirty thousand, seven hundred sixty-one".