105180989 has 8 divisors (see below), whose sum is σ = 111581568. Its totient is φ = 98804160.

The previous prime is 105180961. The next prime is 105180997. The reversal of 105180989 is 989081501.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-105180989 is a prime.

It is a super-2 number, since 2×105180989² = 22126080894036242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105180919) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3644 + ... + 14954.

It is an arithmetic number, because the mean of its divisors is an integer number (13947696).

Almost surely, 2^105180989 is an apocalyptic number.

It is an amenable number.

105180989 is a deficient number, since it is larger than the sum of its proper divisors (6400579).

105180989 is a wasteful number, since it uses less digits than its factorization.

105180989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11875.

The product of its (nonzero) digits is 25920, while the sum is 41.

The square root of 105180989 is about 10255.7783224873. The cubic root of 105180989 is about 472.0403061553.

The spelling of 105180989 in words is "one hundred five million, one hundred eighty thousand, nine hundred eighty-nine".