190242018 has 18 divisors (see below), whose sum is σ = 412317867. Its totient is φ = 63394500.

The previous prime is 190242007. The next prime is 190242023. The reversal of 190242018 is 810242091.

It can be written as a sum of positive squares in only one way, i.e., 95121009 + 95121009 = 9753^2 + 9753^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=9753.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 190241982 and 190242000.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 56893 + ... + 60143.

Almost surely, 2^190242018 is an apocalyptic number.

190242018 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

190242018 is an abundant number, since it is smaller than the sum of its proper divisors (222075849).

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

190242018 is an frugal number, since it uses more digits than its factorization.

190242018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6510 (or 3256 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 190242018 is about 13792.8248738248. The cubic root of 190242018 is about 575.1336984628.

Multiplying 190242018 by its product of nonzero digits (1152), we get a square (219158804736 = 468144²).

The spelling of 190242018 in words is "one hundred ninety million, two hundred forty-two thousand, eighteen".