190538899 has 2 divisors, whose sum is σ = 190538900. Its totient is φ = 190538898.

The previous prime is 190538879. The next prime is 190538911. The reversal of 190538899 is 998835091.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 190538899 - 2¹¹ = 190536851 is a prime.

It is not a weakly prime, because it can be changed into another prime (190538809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95269449 + 95269450.

It is an arithmetic number, because the mean of its divisors is an integer number (95269450).

Almost surely, 2^190538899 is an apocalyptic number.

190538899 is a deficient number, since it is larger than the sum of its proper divisors (1).

190538899 is an equidigital number, since it uses as much as digits as its factorization.

190538899 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 699840, while the sum is 52.

The square root of 190538899 is about 13803.5828320042. The cubic root of 190538899 is about 575.4327167470.

It can be divided in two parts, 1905 and 38899, that added together give a palindrome (40804).

The spelling of 190538899 in words is "one hundred ninety million, five hundred thirty-eight thousand, eight hundred ninety-nine".