190544138 has 16 divisors (see below), whose sum is σ = 294073416. Its totient is φ = 92540160.

The previous prime is 190544131. The next prime is 190544147. The reversal of 190544138 is 831445091.

It can be written as a sum of positive squares in 4 ways, for example, as 47430769 + 143113369 = 6887^2 + 11963^2 .

It is a junction number, because it is equal to n+sod(n) for n = 190544098 and 190544107.

It is not an unprimeable number, because it can be changed into a prime (190544131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14120 + ... + 24092.

Almost surely, 2^190544138 is an apocalyptic number.

190544138 is a deficient number, since it is larger than the sum of its proper divisors (103529278).

190544138 is a wasteful number, since it uses less digits than its factorization.

190544138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10249.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 190544138 is about 13803.7726002713. The cubic root of 190544138 is about 575.4379906734.

The spelling of 190544138 in words is "one hundred ninety million, five hundred forty-four thousand, one hundred thirty-eight".