2193772730 has 8 divisors (see below), whose sum is σ = 3948790932. Its totient is φ = 877509088.

The previous prime is 2193772717. The next prime is 2193772739. The reversal of 2193772730 is 372773912.

It can be written as a sum of positive squares in 2 ways, for example, as 2104148641 + 89624089 = 45871^2 + 9467^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (2193772739) 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, 109688627 + ... + 109688646.

Almost surely, 2^2193772730 is an apocalyptic number.

2193772730 is a deficient number, since it is larger than the sum of its proper divisors (1755018202).

2193772730 is a wasteful number, since it uses less digits than its factorization.

2193772730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219377280.

The product of its (nonzero) digits is 111132, while the sum is 41.

The square root of 2193772730 is about 46837.7276348885. The cubic root of 2193772730 is about 1299.3631456574.

The spelling of 2193772730 in words is "two billion, one hundred ninety-three million, seven hundred seventy-two thousand, seven hundred thirty".