1000165104 has 80 divisors (see below), whose sum is σ = 2874816000. Its totient is φ = 332927424.

The previous prime is 1000165099. The next prime is 1000165129. The reversal of 1000165104 is 4015610001.

1000165104 is a `hidden beast` number, since 10 + 0 + 0 + 1 + 651 + 0 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 475447 + ... + 477545.

It is an arithmetic number, because the mean of its divisors is an integer number (35935200).

Almost surely, 2^1000165104 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1000165104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1437408000).

1000165104 is an abundant number, since it is smaller than the sum of its proper divisors (1874650896).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1000165104 is a wasteful number, since it uses less digits than its factorization.

1000165104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3219 (or 3207 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 1000165104 is about 31625.3870173947. The cubic root of 1000165104 is about 1000.0550316381.

Adding to 1000165104 its reverse (4015610001), we get a palindrome (5015775105).

The spelling of 1000165104 in words is "one billion, one hundred sixty-five thousand, one hundred four".