101490189 has 4 divisors (see below), whose sum is σ = 135320256. Its totient is φ = 67660124.

The previous prime is 101490163. The next prime is 101490217. The reversal of 101490189 is 981094101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 101490189 - 2²⁰ = 100441613 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101494189) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16915029 + ... + 16915034.

It is an arithmetic number, because the mean of its divisors is an integer number (33830064).

Almost surely, 2^101490189 is an apocalyptic number.

It is an amenable number.

101490189 is a deficient number, since it is larger than the sum of its proper divisors (33830067).

101490189 is an equidigital number, since it uses as much as digits as its factorization.

101490189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33830066.

The product of its (nonzero) digits is 2592, while the sum is 33.

The square root of 101490189 is about 10074.2339162837. The cubic root of 101490189 is about 466.4531394453.

The spelling of 101490189 in words is "one hundred one million, four hundred ninety thousand, one hundred eighty-nine".