1538896887 has 96 divisors (see below), whose sum is σ = 2677758720. Its totient is φ = 873400320.

The previous prime is 1538896873. The next prime is 1538896907. The reversal of 1538896887 is 7886988351.

1538896887 is a `hidden beast` number, since 1 + 538 + 8 + 96 + 8 + 8 + 7 = 666.

It is not a de Polignac number, because 1538896887 - 2⁷ = 1538896759 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1538896847) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 7973463 + ... + 7973655.

It is an arithmetic number, because the mean of its divisors is an integer number (27893320).

Almost surely, 2^1538896887 is an apocalyptic number.

1538896887 is a deficient number, since it is larger than the sum of its proper divisors (1138861833).

1538896887 is a wasteful number, since it uses less digits than its factorization.

1538896887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395 (or 383 counting only the distinct ones).

The product of its digits is 23224320, while the sum is 63.

The square root of 1538896887 is about 39228.7762618209. The cubic root of 1538896887 is about 1154.5245538496.

The spelling of 1538896887 in words is "one billion, five hundred thirty-eight million, eight hundred ninety-six thousand, eight hundred eighty-seven".