190520213 has 8 divisors (see below), whose sum is σ = 209047608. Its totient is φ = 172545984.

The previous prime is 190520189. The next prime is 190520219. The reversal of 190520213 is 312025091.

It can be written as a sum of positive squares in 4 ways, for example, as 42484324 + 148035889 = 6518^2 + 12167^2 .

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

It is not a de Polignac number, because 190520213 - 2⁸ = 190519957 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190520219) 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, 137570 + ... + 138947.

It is an arithmetic number, because the mean of its divisors is an integer number (26130951).

Almost surely, 2^190520213 is an apocalyptic number.

190520213 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

190520213 is a deficient number, since it is larger than the sum of its proper divisors (18527395).

190520213 is a wasteful number, since it uses less digits than its factorization.

190520213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276583.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 190520213 is about 13802.9059621516. The cubic root of 190520213 is about 575.4139053874.

The spelling of 190520213 in words is "one hundred ninety million, five hundred twenty thousand, two hundred thirteen".