1538872501 has 8 divisors (see below), whose sum is σ = 1592460000. Its totient is φ = 1485319920.

The previous prime is 1538872481. The next prime is 1538872507. The reversal of 1538872501 is 1052788351.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1538872501 - 2¹⁵ = 1538839733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1538872507) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107250 + ... + 120748.

It is an arithmetic number, because the mean of its divisors is an integer number (199057500).

Almost surely, 2^1538872501 is an apocalyptic number.

It is an amenable number.

1538872501 is a deficient number, since it is larger than the sum of its proper divisors (53587499).

1538872501 is a wasteful number, since it uses less digits than its factorization.

1538872501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17459.

The product of its (nonzero) digits is 67200, while the sum is 40.

The square root of 1538872501 is about 39228.4654428388. The cubic root of 1538872501 is about 1154.5184554586.

The spelling of 1538872501 in words is "one billion, five hundred thirty-eight million, eight hundred seventy-two thousand, five hundred one".