2193430937 has 4 divisors (see below), whose sum is σ = 2208152100. Its totient is φ = 2178709776.

The previous prime is 2193430931. The next prime is 2193430951. The reversal of 2193430937 is 7390343912.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 782376841 + 1411054096 = 27971^2 + 37564^2 .

It is a cyclic number.

It is not a de Polignac number, because 2193430937 - 2²² = 2189236633 is a prime.

It is a super-2 number, since 2×2193430937² = 9622278550777395938, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2193430894 and 2193430903.

It is not an unprimeable number, because it can be changed into a prime (2193430931) 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, 7360358 + ... + 7360655.

It is an arithmetic number, because the mean of its divisors is an integer number (552038025).

Almost surely, 2^2193430937 is an apocalyptic number.

It is an amenable number.

2193430937 is a deficient number, since it is larger than the sum of its proper divisors (14721163).

2193430937 is a wasteful number, since it uses less digits than its factorization.

2193430937 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14721162.

The product of its (nonzero) digits is 122472, while the sum is 41.

The square root of 2193430937 is about 46834.0787995238. The cubic root of 2193430937 is about 1299.2956612597.

The spelling of 2193430937 in words is "two billion, one hundred ninety-three million, four hundred thirty thousand, nine hundred thirty-seven".