190486990 has 32 divisors (see below), whose sum is σ = 353485440. Its totient is φ = 73864224.

The previous prime is 190486973. The next prime is 190486991. The reversal of 190486990 is 99684091.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 190486990.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190486991) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58177 + ... + 61363.

It is an arithmetic number, because the mean of its divisors is an integer number (11046420).

Almost surely, 2^190486990 is an apocalyptic number.

190486990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

190486990 is a deficient number, since it is larger than the sum of its proper divisors (162998450).

190486990 is a wasteful number, since it uses less digits than its factorization.

190486990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3376.

The product of its (nonzero) digits is 139968, while the sum is 46.

The square root of 190486990 is about 13801.7024312220. The cubic root of 190486990 is about 575.3804564649.

The spelling of 190486990 in words is "one hundred ninety million, four hundred eighty-six thousand, nine hundred ninety".