4006237545 has 72 divisors (see below), whose sum is σ = 7202562120. Its totient is φ = 2059706880.

The previous prime is 4006237531. The next prime is 4006237583. The reversal of 4006237545 is 5457326004.

It can be written as a sum of positive squares in 4 ways, for example, as 43283241 + 3962954304 = 6579^2 + 62952^2 .

It is not a de Polignac number, because 4006237545 - 2⁶ = 4006237481 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 7404975 + ... + 7405515.

It is an arithmetic number, because the mean of its divisors is an integer number (100035585).

Almost surely, 2^4006237545 is an apocalyptic number.

4006237545 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4006237545 is a deficient number, since it is larger than the sum of its proper divisors (3196324575).

4006237545 is a wasteful number, since it uses less digits than its factorization.

4006237545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 727 (or 681 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 36.

The square root of 4006237545 is about 63294.8461171998. The cubic root of 4006237545 is about 1588.2257472350.

The spelling of 4006237545 in words is "four billion, six million, two hundred thirty-seven thousand, five hundred forty-five".