4001545140 has 48 divisors (see below), whose sum is σ = 11208301440. Its totient is φ = 1066700160.

The previous prime is 4001545139. The next prime is 4001545147. The reversal of 4001545140 is 415451004.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 4001545140.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4001545147) 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, 186066 + ... + 206454.

It is an arithmetic number, because the mean of its divisors is an integer number (233506280).

Almost surely, 2^4001545140 is an apocalyptic number.

It is an amenable number.

4001545140 is an abundant number, since it is smaller than the sum of its proper divisors (7206756300).

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

4001545140 is a wasteful number, since it uses less digits than its factorization.

4001545140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23672 (or 23670 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 4001545140 is about 63257.7674281981. The cubic root of 4001545140 is about 1587.6054220605.

Adding to 4001545140 its reverse (415451004), we get a palindrome (4416996144).

The spelling of 4001545140 in words is "four billion, one million, five hundred forty-five thousand, one hundred forty".