199451134 has 4 divisors (see below), whose sum is σ = 299176704. Its totient is φ = 99725566.

The previous prime is 199451129. The next prime is 199451149. The reversal of 199451134 is 431154991.

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

It is a junction number, because it is equal to n+sod(n) for n = 199451093 and 199451102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49862782 + ... + 49862785.

It is an arithmetic number, because the mean of its divisors is an integer number (74794176).

Almost surely, 2^199451134 is an apocalyptic number.

199451134 is a deficient number, since it is larger than the sum of its proper divisors (99725570).

199451134 is an equidigital number, since it uses as much as digits as its factorization.

199451134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99725569.

The product of its digits is 19440, while the sum is 37.

The square root of 199451134 is about 14122.7169482363. The cubic root of 199451134 is about 584.2680928820.

The spelling of 199451134 in words is "one hundred ninety-nine million, four hundred fifty-one thousand, one hundred thirty-four".