190000002 has 16 divisors (see below), whose sum is σ = 380142432. Its totient is φ = 63309600.

The previous prime is 189999989. The next prime is 190000003. The reversal of 190000002 is 200000091.

It is a happy number.

It is a super-2 number, since 2×190000002² = 72200001520000008, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (190000003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20398 + ... + 28214.

It is an arithmetic number, because the mean of its divisors is an integer number (23758902).

Almost surely, 2^190000002 is an apocalyptic number.

190000002 is an abundant number, since it is smaller than the sum of its proper divisors (190142430).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

190000002 is a wasteful number, since it uses less digits than its factorization.

190000002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11873.

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 190000002 is about 13784.0488246378. The cubic root of 190000002 is about 574.8897099116.

Adding to 190000002 its reverse (200000091), we get a palindrome (390000093).

The spelling of 190000002 in words is "one hundred ninety million, two", and thus it is an aban number.