190838321 has 2 divisors, whose sum is σ = 190838322. Its totient is φ = 190838320.

The previous prime is 190838303. The next prime is 190838369. The reversal of 190838321 is 123838091.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 110986225 + 79852096 = 10535^2 + 8936^2 .

It is a cyclic number.

It is not a de Polignac number, because 190838321 - 2¹⁴ = 190821937 is a prime.

It is not a weakly prime, because it can be changed into another prime (190834321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95419160 + 95419161.

It is an arithmetic number, because the mean of its divisors is an integer number (95419161).

Almost surely, 2^190838321 is an apocalyptic number.

It is an amenable number.

190838321 is a deficient number, since it is larger than the sum of its proper divisors (1).

190838321 is an equidigital number, since it uses as much as digits as its factorization.

190838321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 190838321 is about 13814.4243817830. The cubic root of 190838321 is about 575.7339798880.

The spelling of 190838321 in words is "one hundred ninety million, eight hundred thirty-eight thousand, three hundred twenty-one".