190018942 has 4 divisors (see below), whose sum is σ = 285028416. Its totient is φ = 95009470.

The previous prime is 190018921. The next prime is 190018949. The reversal of 190018942 is 249810091.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×190018942² = 72214396637598728, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 190018898 and 190018907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190018949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47504734 + ... + 47504737.

It is an arithmetic number, because the mean of its divisors is an integer number (71257104).

Almost surely, 2^190018942 is an apocalyptic number.

190018942 is a deficient number, since it is larger than the sum of its proper divisors (95009474).

190018942 is an equidigital number, since it uses as much as digits as its factorization.

190018942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95009473.

The product of its (nonzero) digits is 5184, while the sum is 34.

The square root of 190018942 is about 13784.7358335225. The cubic root of 190018942 is about 574.9088117524.

The spelling of 190018942 in words is "one hundred ninety million, eighteen thousand, nine hundred forty-two".