190885087 has 4 divisors (see below), whose sum is σ = 191341080. Its totient is φ = 190429096.

The previous prime is 190885081. The next prime is 190885091. The reversal of 190885087 is 780588091.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-190885087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190885081) 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, 227368 + ... + 228205.

It is an arithmetic number, because the mean of its divisors is an integer number (47835270).

Almost surely, 2^190885087 is an apocalyptic number.

190885087 is a deficient number, since it is larger than the sum of its proper divisors (455993).

190885087 is an equidigital number, since it uses as much as digits as its factorization.

190885087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455992.

The product of its (nonzero) digits is 161280, while the sum is 46.

The square root of 190885087 is about 13816.1169291520. The cubic root of 190885087 is about 575.7810049930.

The spelling of 190885087 in words is "one hundred ninety million, eight hundred eighty-five thousand, eighty-seven".