190491840493 has 8 divisors (see below), whose sum is σ = 190989760896. Its totient is φ = 189994428000.

The previous prime is 190491840481. The next prime is 190491840509. The reversal of 190491840493 is 394048194091.

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 190491840493 - 2⁹ = 190491839981 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 190491840493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190491840193) 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, 629980 + ... + 881962.

It is an arithmetic number, because the mean of its divisors is an integer number (23873720112).

Almost surely, 2^190491840493 is an apocalyptic number.

It is an amenable number.

190491840493 is a deficient number, since it is larger than the sum of its proper divisors (497920403).

190491840493 is a wasteful number, since it uses less digits than its factorization.

190491840493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253955.

The product of its (nonzero) digits is 1119744, while the sum is 52.

The spelling of 190491840493 in words is "one hundred ninety billion, four hundred ninety-one million, eight hundred forty thousand, four hundred ninety-three".