1101862440 has 320 divisors, whose sum is σ = 4457059200. Its totient is φ = 238505472.

The previous prime is 1101862439. The next prime is 1101862441. The reversal of 1101862440 is 442681011.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1101862439) and next prime (1101862441).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1101862441) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 429642 + ... + 432198.

It is an arithmetic number, because the mean of its divisors is an integer number (13928310).

Almost surely, 2^1101862440 is an apocalyptic number.

1101862440 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 1101862440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2228529600).

1101862440 is an abundant number, since it is smaller than the sum of its proper divisors (3355196760).

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

1101862440 is a wasteful number, since it uses less digits than its factorization.

1101862440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2606 (or 2593 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 1101862440 is about 33194.3133684069. The cubic root of 1101862440 is about 1032.8623808356.

The spelling of 1101862440 in words is "one billion, one hundred one million, eight hundred sixty-two thousand, four hundred forty".