101805641 has 16 divisors (see below), whose sum is σ = 118487040. Its totient is φ = 85672080.

The previous prime is 101805623. The next prime is 101805653. The reversal of 101805641 is 146508101.

It is a cyclic number.

It is not a de Polignac number, because 101805641 - 2⁶ = 101805577 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 101805641.

It is not an unprimeable number, because it can be changed into a prime (101805541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 125126 + ... + 125936.

It is an arithmetic number, because the mean of its divisors is an integer number (7405440).

Almost surely, 2^101805641 is an apocalyptic number.

It is an amenable number.

101805641 is a deficient number, since it is larger than the sum of its proper divisors (16681399).

101805641 is an equidigital number, since it uses as much as digits as its factorization.

101805641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1124.

The product of its (nonzero) digits is 960, while the sum is 26.

The square root of 101805641 is about 10089.8781459441. The cubic root of 101805641 is about 466.9359164481.

The spelling of 101805641 in words is "one hundred one million, eight hundred five thousand, six hundred forty-one".