1868191046 has 8 divisors (see below), whose sum is σ = 2815568184. Its totient is φ = 929668320.

The previous prime is 1868191043. The next prime is 1868191051. The reversal of 1868191046 is 6401918681.

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

It is a junction number, because it is equal to n+sod(n) for n = 1868190988 and 1868191006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1868191043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2213075 + ... + 2213918.

It is an arithmetic number, because the mean of its divisors is an integer number (351946023).

Almost surely, 2^1868191046 is an apocalyptic number.

1868191046 is a deficient number, since it is larger than the sum of its proper divisors (947377138).

1868191046 is a wasteful number, since it uses less digits than its factorization.

1868191046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4427206.

The product of its (nonzero) digits is 82944, while the sum is 44.

The square root of 1868191046 is about 43222.5756520826. The cubic root of 1868191046 is about 1231.6115756131.

The spelling of 1868191046 in words is "one billion, eight hundred sixty-eight million, one hundred ninety-one thousand, forty-six".