190490971 has 4 divisors (see below), whose sum is σ = 207808344. Its totient is φ = 173173600.

The previous prime is 190490897. The next prime is 190490977. The reversal of 190490971 is 179094091.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 190490971 - 2⁷ = 190490843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (190490977) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8658670 + ... + 8658691.

It is an arithmetic number, because the mean of its divisors is an integer number (51952086).

Almost surely, 2^190490971 is an apocalyptic number.

190490971 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

190490971 is a deficient number, since it is larger than the sum of its proper divisors (17317373).

190490971 is a wasteful number, since it uses less digits than its factorization.

190490971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17317372.

The product of its (nonzero) digits is 20412, while the sum is 40.

The square root of 190490971 is about 13801.8466518071. The cubic root of 190490971 is about 575.3844647415.

The spelling of 190490971 in words is "one hundred ninety million, four hundred ninety thousand, nine hundred seventy-one".