1989672103 has 8 divisors (see below), whose sum is σ = 2036201472. Its totient is φ = 1943317656.

The previous prime is 1989672079. The next prime is 1989672119. The reversal of 1989672103 is 3012769891.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1989672103 - 2⁵ = 1989672071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1989670103) 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, 20575 + ... + 66352.

It is an arithmetic number, because the mean of its divisors is an integer number (254525184).

Almost surely, 2^1989672103 is an apocalyptic number.

1989672103 is a deficient number, since it is larger than the sum of its proper divisors (46529369).

1989672103 is an equidigital number, since it uses as much as digits as its factorization.

1989672103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87461.

The product of its (nonzero) digits is 163296, while the sum is 46.

The square root of 1989672103 is about 44605.7406955652. The cubic root of 1989672103 is about 1257.7485836193.

The spelling of 1989672103 in words is "one billion, nine hundred eighty-nine million, six hundred seventy-two thousand, one hundred three".