1538479499 has 16 divisors (see below), whose sum is σ = 1687141632. Its totient is φ = 1398485088.

The previous prime is 1538479489. The next prime is 1538479517. The reversal of 1538479499 is 9949748351.

It is a cyclic number.

It is not a de Polignac number, because 1538479499 - 2¹² = 1538475403 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1538479469) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15572 + ... + 57614.

It is an arithmetic number, because the mean of its divisors is an integer number (105446352).

Almost surely, 2^1538479499 is an apocalyptic number.

1538479499 is a deficient number, since it is larger than the sum of its proper divisors (148662133).

1538479499 is a wasteful number, since it uses less digits than its factorization.

1538479499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42146.

The product of its digits is 9797760, while the sum is 59.

The square root of 1538479499 is about 39223.4559798088. The cubic root of 1538479499 is about 1154.4201655977.

The spelling of 1538479499 in words is "one billion, five hundred thirty-eight million, four hundred seventy-nine thousand, four hundred ninety-nine".