1011545440 has 96 divisors (see below), whose sum is σ = 2461415040. Its totient is φ = 392601600.

The previous prime is 1011545429. The next prime is 1011545443. The reversal of 1011545440 is 445451101.

1011545440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011545443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1777476 + ... + 1778044.

It is an arithmetic number, because the mean of its divisors is an integer number (25639740).

Almost surely, 2^1011545440 is an apocalyptic number.

1011545440 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 1011545440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1230707520).

1011545440 is an abundant number, since it is smaller than the sum of its proper divisors (1449869600).

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

1011545440 is a wasteful number, since it uses less digits than its factorization.

1011545440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 896 (or 888 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 25.

The square root of 1011545440 is about 31804.8021531340. The cubic root of 1011545440 is about 1003.8337634751.

Adding to 1011545440 its reverse (445451101), we get a palindrome (1456996541).

It can be divided in two parts, 10115 and 45440, that added together give a palindrome (55555).

The spelling of 1011545440 in words is "one billion, eleven million, five hundred forty-five thousand, four hundred forty".