1538063709 has 32 divisors (see below), whose sum is σ = 2585581824. Its totient is φ = 791493120.

The previous prime is 1538063669. The next prime is 1538063711. The reversal of 1538063709 is 9073608351.

It is not a de Polignac number, because 1538063709 - 2⁷ = 1538063581 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1538063789) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 57514 + ... + 79899.

It is an arithmetic number, because the mean of its divisors is an integer number (80799432).

Almost surely, 2^1538063709 is an apocalyptic number.

It is an amenable number.

1538063709 is a deficient number, since it is larger than the sum of its proper divisors (1047518115).

1538063709 is a wasteful number, since it uses less digits than its factorization.

1538063709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137477.

The product of its (nonzero) digits is 136080, while the sum is 42.

The square root of 1538063709 is about 39218.1553492767. The cubic root of 1538063709 is about 1154.3161582301.

The spelling of 1538063709 in words is "one billion, five hundred thirty-eight million, sixty-three thousand, seven hundred nine".