190486889 has 2 divisors, whose sum is σ = 190486890. Its totient is φ = 190486888.

The previous prime is 190486831. The next prime is 190486927. The reversal of 190486889 is 988684091.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 151486864 + 39000025 = 12308^2 + 6245^2 .

It is a cyclic number.

It is not a de Polignac number, because 190486889 - 2¹² = 190482793 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 190486889.

It is not a weakly prime, because it can be changed into another prime (190486189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95243444 + 95243445.

It is an arithmetic number, because the mean of its divisors is an integer number (95243445).

Almost surely, 2^190486889 is an apocalyptic number.

It is an amenable number.

190486889 is a deficient number, since it is larger than the sum of its proper divisors (1).

190486889 is an equidigital number, since it uses as much as digits as its factorization.

190486889 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 995328, while the sum is 53.

The square root of 190486889 is about 13801.6987722526. The cubic root of 190486889 is about 575.3803547722.

The spelling of 190486889 in words is "one hundred ninety million, four hundred eighty-six thousand, eight hundred eighty-nine".