190020386 has 4 divisors (see below), whose sum is σ = 285030582. Its totient is φ = 95010192.

The previous prime is 190020377. The next prime is 190020401. The reversal of 190020386 is 683020091.

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

It can be written as a sum of positive squares in only one way, i.e., 187827025 + 2193361 = 13705^2 + 1481^2 .

It is a super-2 number, since 2×190020386² = 72215494191177992, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47505095 + ... + 47505098.

Almost surely, 2^190020386 is an apocalyptic number.

190020386 is a deficient number, since it is larger than the sum of its proper divisors (95010196).

190020386 is an equidigital number, since it uses as much as digits as its factorization.

190020386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95010195.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 190020386 is about 13784.7882101975. The cubic root of 190020386 is about 574.9102680391.

The spelling of 190020386 in words is "one hundred ninety million, twenty thousand, three hundred eighty-six".