101808045 has 24 divisors (see below), whose sum is σ = 176900256. Its totient is φ = 54164448.

The previous prime is 101808017. The next prime is 101808059. The reversal of 101808045 is 540808101.

It is not a de Polignac number, because 101808045 - 2⁵ = 101808013 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17382 + ... + 22488.

It is an arithmetic number, because the mean of its divisors is an integer number (7370844).

Almost surely, 2^101808045 is an apocalyptic number.

101808045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

101808045 is a deficient number, since it is larger than the sum of its proper divisors (75092211).

101808045 is a wasteful number, since it uses less digits than its factorization.

101808045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5561 (or 5558 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 27.

The square root of 101808045 is about 10089.9972745289. The cubic root of 101808045 is about 466.9395917687.

It can be divided in two parts, 10180 and 8045, that added together give a square (18225 = 135²).

The spelling of 101808045 in words is "one hundred one million, eight hundred eight thousand, forty-five".