8190090181 has 8 divisors (see below), whose sum is σ = 10080111104. Its totient is φ = 6480071280.

The previous prime is 8190090179. The next prime is 8190090191. The reversal of 8190090181 is 1810900918.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8190090181 - 2¹ = 8190090179 is a prime.

It is a super-2 number, since 2×8190090181² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 8190090181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8190090121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45000405 + ... + 45000586.

It is an arithmetic number, because the mean of its divisors is an integer number (1260013888).

Almost surely, 2^8190090181 is an apocalyptic number.

It is an amenable number.

8190090181 is a deficient number, since it is larger than the sum of its proper divisors (1890020923).

8190090181 is a wasteful number, since it uses less digits than its factorization.

8190090181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90001011.

The product of its (nonzero) digits is 5184, while the sum is 37.

The square root of 8190090181 is about 90499.1170177919. The cubic root of 8190090181 is about 2015.7170126330.

The spelling of 8190090181 in words is "eight billion, one hundred ninety million, ninety thousand, one hundred eighty-one".