1989569103 has 8 divisors (see below), whose sum is σ = 2654279088. Its totient is φ = 1325619264.

The previous prime is 1989569093. The next prime is 1989569111. The reversal of 1989569103 is 3019659891.

It is a happy number.

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

It is not a de Polignac number, because 1989569103 - 2⁶ = 1989569039 is a prime.

It is a super-2 number, since 2×1989569103² = 7916770431224449218, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1989562103) 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, 183900 + ... + 194417.

It is an arithmetic number, because the mean of its divisors is an integer number (331784886).

Almost surely, 2^1989569103 is an apocalyptic number.

1989569103 is a deficient number, since it is larger than the sum of its proper divisors (664709985).

1989569103 is a wasteful number, since it uses less digits than its factorization.

1989569103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380073.

The product of its (nonzero) digits is 524880, while the sum is 51.

The square root of 1989569103 is about 44604.5861207118. The cubic root of 1989569103 is about 1257.7268798187.

The spelling of 1989569103 in words is "one billion, nine hundred eighty-nine million, five hundred sixty-nine thousand, one hundred three".