1545111040 has 80 divisors (see below), whose sum is σ = 4041504720. Its totient is φ = 561848320.

The previous prime is 1545111031. The next prime is 1545111109. The reversal of 1545111040 is 401115451.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 726 + ... + 55594.

It is an arithmetic number, because the mean of its divisors is an integer number (50518809).

Almost surely, 2^1545111040 is an apocalyptic number.

1545111040 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 1545111040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2020752360).

1545111040 is an abundant number, since it is smaller than the sum of its proper divisors (2496393680).

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

1545111040 is an equidigital number, since it uses as much as digits as its factorization.

1545111040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54903 (or 54887 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 22.

The square root of 1545111040 is about 39307.9004781482. The cubic root of 1545111040 is about 1156.0764786988.

Adding to 1545111040 its reverse (401115451), we get a palindrome (1946226491).

It can be divided in two parts, 154511 and 1040, that added together give a palindrome (155551).

The spelling of 1545111040 in words is "one billion, five hundred forty-five million, one hundred eleven thousand, forty".