101928191 has 2 divisors, whose sum is σ = 101928192. Its totient is φ = 101928190.

The previous prime is 101928181. The next prime is 101928193. The reversal of 101928191 is 191829101.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 101928191 - 2¹⁴ = 101911807 is a prime.

It is a super-2 number, since 2×101928191² = 20778712241064962, which contains 22 as substring.

Together with 101928193, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101928193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50964095 + 50964096.

It is an arithmetic number, because the mean of its divisors is an integer number (50964096).

Almost surely, 2^101928191 is an apocalyptic number.

101928191 is a deficient number, since it is larger than the sum of its proper divisors (1).

101928191 is an equidigital number, since it uses as much as digits as its factorization.

101928191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 32.

The square root of 101928191 is about 10095.9492371941. The cubic root of 101928191 is about 467.1232015872.

The spelling of 101928191 in words is "one hundred one million, nine hundred twenty-eight thousand, one hundred ninety-one".