199094738 has 4 divisors (see below), whose sum is σ = 298642110. Its totient is φ = 99547368.

The previous prime is 199094737. The next prime is 199094759. The reversal of 199094738 is 837490991.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 837490991 = 131 ⋅6393061.

It can be written as a sum of positive squares in only one way, i.e., 169859089 + 29235649 = 13033^2 + 5407^2 .

It is not an unprimeable number, because it can be changed into a prime (199094737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49773683 + ... + 49773686.

Almost surely, 2^199094738 is an apocalyptic number.

199094738 is a deficient number, since it is larger than the sum of its proper divisors (99547372).

199094738 is an equidigital number, since it uses as much as digits as its factorization.

199094738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99547371.

The product of its (nonzero) digits is 489888, while the sum is 50.

The square root of 199094738 is about 14110.0934794919. The cubic root of 199094738 is about 583.9198789972.

The spelling of 199094738 in words is "one hundred ninety-nine million, ninety-four thousand, seven hundred thirty-eight".