1101001400 has 48 divisors (see below), whose sum is σ = 2576851440. Its totient is φ = 437472000.

The previous prime is 1101001399. The next prime is 1101001409. The reversal of 1101001400 is 41001011.

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101001409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11972 + ... + 48428.

It is an arithmetic number, because the mean of its divisors is an integer number (53684405).

Almost surely, 2^1101001400 is an apocalyptic number.

1101001400 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 1101001400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1288425720).

1101001400 is an abundant number, since it is smaller than the sum of its proper divisors (1475850040).

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

1101001400 is a wasteful number, since it uses less digits than its factorization.

1101001400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36624 (or 36615 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

The square root of 1101001400 is about 33181.3411422745. The cubic root of 1101001400 is about 1032.5932705405.

Adding to 1101001400 its reverse (41001011), we get a palindrome (1142002411).

The spelling of 1101001400 in words is "one billion, one hundred one million, one thousand, four hundred".