100916861 has 2 divisors, whose sum is σ = 100916862. Its totient is φ = 100916860.

The previous prime is 100916857. The next prime is 100916899. The reversal of 100916861 is 168619001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 93973636 + 6943225 = 9694^2 + 2635^2 .

It is a cyclic number.

It is not a de Polignac number, because 100916861 - 2² = 100916857 is a prime.

It is a super-4 number, since 4×100916861⁴ (a number of 33 digits) contains 4444 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100916831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50458430 + 50458431.

It is an arithmetic number, because the mean of its divisors is an integer number (50458431).

Almost surely, 2^100916861 is an apocalyptic number.

It is an amenable number.

100916861 is a deficient number, since it is larger than the sum of its proper divisors (1).

100916861 is an equidigital number, since it uses as much as digits as its factorization.

100916861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 32.

The square root of 100916861 is about 10045.7384497109. The cubic root of 100916861 is about 465.5731338171.

The spelling of 100916861 in words is "one hundred million, nine hundred sixteen thousand, eight hundred sixty-one".