1538541504 has 84 divisors (see below), whose sum is σ = 4415500440. Its totient is φ = 512202240.

The previous prime is 1538541493. The next prime is 1538541517. The reversal of 1538541504 is 4051458351.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 742582 + ... + 744650.

Almost surely, 2^1538541504 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 1538541504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2207750220).

1538541504 is an abundant number, since it is smaller than the sum of its proper divisors (2876958936).

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

1538541504 is a wasteful number, since it uses less digits than its factorization.

1538541504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3378 (or 3365 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 36.

The square root of 1538541504 is about 39224.2463789937. The cubic root of 1538541504 is about 1154.4356741698.

Adding to 1538541504 its reverse (4051458351), we get a palindrome (5589999855).

The spelling of 1538541504 in words is "one billion, five hundred thirty-eight million, five hundred forty-one thousand, five hundred four".