101180989 has 32 divisors (see below), whose sum is σ = 130507776. Its totient is φ = 76308480.

The previous prime is 101180987. The next prime is 101181007. The reversal of 101180989 is 989081101.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 101180989 - 2¹ = 101180987 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101180987) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 175069 + ... + 175645.

It is an arithmetic number, because the mean of its divisors is an integer number (4078368).

Almost surely, 2^101180989 is an apocalyptic number.

It is an amenable number.

101180989 is a deficient number, since it is larger than the sum of its proper divisors (29326787).

101180989 is a wasteful number, since it uses less digits than its factorization.

101180989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 685.

The product of its (nonzero) digits is 5184, while the sum is 37.

The square root of 101180989 is about 10058.8761300654. The cubic root of 101180989 is about 465.9789588761.

The spelling of 101180989 in words is "one hundred one million, one hundred eighty thousand, nine hundred eighty-nine".