920089187 has 2 divisors, whose sum is σ = 920089188. Its totient is φ = 920089186.

The previous prime is 920089151. The next prime is 920089229. The reversal of 920089187 is 781980029.

It is a weak prime.

It is an emirp because it is prime and its reverse (781980029) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 920089187 - 2¹⁰ = 920088163 is a prime.

It is a super-2 number, since 2×920089187² = 1693128224068641938, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (920089087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 460044593 + 460044594.

It is an arithmetic number, because the mean of its divisors is an integer number (460044594).

Almost surely, 2^920089187 is an apocalyptic number.

920089187 is a deficient number, since it is larger than the sum of its proper divisors (1).

920089187 is an equidigital number, since it uses as much as digits as its factorization.

920089187 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 44.

The square root of 920089187 is about 30332.9719447337. The cubic root of 920089187 is about 972.6202535655.

The spelling of 920089187 in words is "nine hundred twenty million, eighty-nine thousand, one hundred eighty-seven".