101838861 has 12 divisors (see below), whose sum is σ = 149296992. Its totient is φ = 66878856.

The previous prime is 101838859. The next prime is 101838883. The reversal of 101838861 is 168838101.

It is not a de Polignac number, because 101838861 - 2¹ = 101838859 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101838761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 83841 + ... + 85046.

It is an arithmetic number, because the mean of its divisors is an integer number (12441416).

Almost surely, 2^101838861 is an apocalyptic number.

It is an amenable number.

101838861 is a deficient number, since it is larger than the sum of its proper divisors (47458131).

101838861 is a wasteful number, since it uses less digits than its factorization.

101838861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168960 (or 168957 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 36.

The square root of 101838861 is about 10091.5242158952. The cubic root of 101838861 is about 466.9866992408.

It can be divided in two parts, 10183 and 8861, that added together give a square (19044 = 138²).

The spelling of 101838861 in words is "one hundred one million, eight hundred thirty-eight thousand, eight hundred sixty-one".