1101623040 has 432 divisors, whose sum is σ = 4591641600. Its totient is φ = 238215168.

The previous prime is 1101623011. The next prime is 1101623041. The reversal of 1101623040 is 403261011.

It is a happy number.

1101623040 is a `hidden beast` number, since 1 + 1 + 0 + 1 + 623 + 0 + 40 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101623041) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1531801 + ... + 1532519.

It is an arithmetic number, because the mean of its divisors is an integer number (10628800).

Almost surely, 2^1101623040 is an apocalyptic number.

1101623040 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 1101623040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2295820800).

1101623040 is an abundant number, since it is smaller than the sum of its proper divisors (3490018560).

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

1101623040 is a wasteful number, since it uses less digits than its factorization.

1101623040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 772 (or 755 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1101623040 is about 33190.7071331721. The cubic root of 1101623040 is about 1032.7875725973.

Adding to 1101623040 its reverse (403261011), we get a palindrome (1504884051).

The spelling of 1101623040 in words is "one billion, one hundred one million, six hundred twenty-three thousand, forty".