1101129989 has 8 divisors (see below), whose sum is σ = 1129013592. Its totient is φ = 1073295360.

The previous prime is 1101129973. The next prime is 1101130007. The reversal of 1101129989 is 9899211011.

It can be written as a sum of positive squares in 4 ways, for example, as 1677025 + 1099452964 = 1295^2 + 33158^2 .

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 1101129989 - 2⁴ = 1101129973 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101119989) 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, 35627 + ... + 58919.

It is an arithmetic number, because the mean of its divisors is an integer number (141126699).

Almost surely, 2^1101129989 is an apocalyptic number.

It is an amenable number.

1101129989 is a deficient number, since it is larger than the sum of its proper divisors (27883603).

1101129989 is a wasteful number, since it uses less digits than its factorization.

1101129989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24487.

The product of its (nonzero) digits is 11664, while the sum is 41.

The square root of 1101129989 is about 33183.2787560241. The cubic root of 1101129989 is about 1032.6334687840.

The spelling of 1101129989 in words is "one billion, one hundred one million, one hundred twenty-nine thousand, nine hundred eighty-nine".