190011001 has 16 divisors (see below), whose sum is σ = 203607040. Its totient is φ = 176806800.

The previous prime is 190010993. The next prime is 190011007. The reversal of 190011001 is 100110091.

It is a cyclic number.

It is not a de Polignac number, because 190011001 - 2³ = 190010993 is a prime.

It is a super-2 number, since 2×190011001² = 72208361002044002, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (190011007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 295186 + ... + 295828.

It is an arithmetic number, because the mean of its divisors is an integer number (12725440).

Almost surely, 2^190011001 is an apocalyptic number.

It is an amenable number.

190011001 is a deficient number, since it is larger than the sum of its proper divisors (13596039).

190011001 is a wasteful number, since it uses less digits than its factorization.

190011001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 916.

The product of its (nonzero) digits is 9, while the sum is 13.

The square root of 190011001 is about 13784.4477945255. The cubic root of 190011001 is about 574.9008030517.

Adding to 190011001 its reverse (100110091), we get a palindrome (290121092).

It can be divided in two parts, 19001 and 1001, that added together give a palindrome (20002).

The spelling of 190011001 in words is "one hundred ninety million, eleven thousand, one".