4000537500 has 72 divisors (see below), whose sum is σ = 11667596976. Its totient is φ = 1066800000.

The previous prime is 4000537481. The next prime is 4000537523. The reversal of 4000537500 is 57350004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15841 + ... + 90840.

It is an arithmetic number, because the mean of its divisors is an integer number (162049958).

Almost surely, 2^4000537500 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4000537500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5833798488).

4000537500 is an abundant number, since it is smaller than the sum of its proper divisors (7667059476).

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

4000537500 is a wasteful number, since it uses less digits than its factorization.

4000537500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106713 (or 106691 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 24.

The square root of 4000537500 is about 63249.8023712327. The cubic root of 4000537500 is about 1587.4721511224.

Adding to 4000537500 its reverse (57350004), we get a palindrome (4057887504).

The spelling of 4000537500 in words is "four billion, five hundred thirty-seven thousand, five hundred".