190800881 has 2 divisors, whose sum is σ = 190800882. Its totient is φ = 190800880.

The previous prime is 190800853. The next prime is 190800887. The reversal of 190800881 is 188008091.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 117527281 + 73273600 = 10841^2 + 8560^2 .

It is an emirp because it is prime and its reverse (188008091) is a distict prime. It is also a bemirp because it and its reverse can be mirrored producing other two distinct primes, 188008061 and 160800881.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-190800881 is a prime.

It is a super-2 number, since 2×190800881² = 72809952380752322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (190800887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95400440 + 95400441.

It is an arithmetic number, because the mean of its divisors is an integer number (95400441).

Almost surely, 2^190800881 is an apocalyptic number.

It is an amenable number.

190800881 is a deficient number, since it is larger than the sum of its proper divisors (1).

190800881 is an equidigital number, since it uses as much as digits as its factorization.

190800881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 35.

The square root of 190800881 is about 13813.0692099909. The cubic root of 190800881 is about 575.6963269158.

The spelling of 190800881 in words is "one hundred ninety million, eight hundred thousand, eight hundred eighty-one".