101894381 has 2 divisors, whose sum is σ = 101894382. Its totient is φ = 101894380.

The previous prime is 101894363. The next prime is 101894407. The reversal of 101894381 is 183498101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 101324356 + 570025 = 10066^2 + 755^2 .

It is a cyclic number.

It is not a de Polignac number, because 101894381 - 2¹⁰ = 101893357 is a prime.

It is a super-2 number, since 2×101894381² = 20764929758746322, which contains 22 as substring.

It is a Chen prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101894341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50947190 + 50947191.

It is an arithmetic number, because the mean of its divisors is an integer number (50947191).

Almost surely, 2^101894381 is an apocalyptic number.

It is an amenable number.

101894381 is a deficient number, since it is larger than the sum of its proper divisors (1).

101894381 is an equidigital number, since it uses as much as digits as its factorization.

101894381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 35.

The square root of 101894381 is about 10094.2746643828. The cubic root of 101894381 is about 467.0715469800.

The spelling of 101894381 in words is "one hundred one million, eight hundred ninety-four thousand, three hundred eighty-one".