190045001 has 2 divisors, whose sum is σ = 190045002. Its totient is φ = 190045000.

The previous prime is 190044997. The next prime is 190045013. The reversal of 190045001 is 100540091.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 161315401 + 28729600 = 12701^2 + 5360^2 .

It is a cyclic number.

It is not a de Polignac number, because 190045001 - 2² = 190044997 is a prime.

It is a super-2 number, since 2×190045001² = 72234204810180002, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (190045501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95022500 + 95022501.

It is an arithmetic number, because the mean of its divisors is an integer number (95022501).

Almost surely, 2^190045001 is an apocalyptic number.

It is an amenable number.

190045001 is a deficient number, since it is larger than the sum of its proper divisors (1).

190045001 is an equidigital number, since it uses as much as digits as its factorization.

190045001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 190045001 is about 13785.6810132833. The cubic root of 190045001 is about 574.9350913498.

Adding to 190045001 its reverse (100540091), we get a palindrome (290585092).

The spelling of 190045001 in words is "one hundred ninety million, forty-five thousand, one".