1101405000 has 160 divisors (see below), whose sum is σ = 3479636160. Its totient is φ = 290400000.

The previous prime is 1101404957. The next prime is 1101405001. The reversal of 1101405000 is 5041011.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (1101405001) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1514637 + ... + 1515363.

It is an arithmetic number, because the mean of its divisors is an integer number (21747726).

Almost surely, 2^1101405000 is an apocalyptic number.

1101405000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1101405000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1739818080).

1101405000 is an abundant number, since it is smaller than the sum of its proper divisors (2378231160).

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

1101405000 is a wasteful number, since it uses less digits than its factorization.

1101405000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 857 (or 838 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 12.

The square root of 1101405000 is about 33187.4223162933. The cubic root of 1101405000 is about 1032.7194295476.

Adding to 1101405000 its reverse (5041011), we get a palindrome (1106446011).

The spelling of 1101405000 in words is "one billion, one hundred one million, four hundred five thousand".