1538371503 has 12 divisors (see below), whose sum is σ = 2250220960. Its totient is φ = 1012598496.

The previous prime is 1538371451. The next prime is 1538371507. The reversal of 1538371503 is 3051738351.

It is a happy number.

1538371503 is a `hidden beast` number, since 1 + 5 + 3 + 83 + 71 + 503 = 666.

It is not a de Polignac number, because 1538371503 - 2⁹ = 1538370991 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 (1538371507) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1081126 + ... + 1082547.

Almost surely, 2^1538371503 is an apocalyptic number.

1538371503 is a deficient number, since it is larger than the sum of its proper divisors (711849457).

1538371503 is a wasteful number, since it uses less digits than its factorization.

1538371503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2163758 (or 2163755 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 36.

The square root of 1538371503 is about 39222.0792794059. The cubic root of 1538371503 is about 1154.3931528496.

The spelling of 1538371503 in words is "one billion, five hundred thirty-eight million, three hundred seventy-one thousand, five hundred three".