1538117111 has 8 divisors (see below), whose sum is σ = 1656766464. Its totient is φ = 1423782360.

The previous prime is 1538117071. The next prime is 1538117117. The reversal of 1538117111 is 1117118351.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1538117111 - 2¹⁴ = 1538100727 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 (1538117117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1077911 + ... + 1079336.

It is an arithmetic number, because the mean of its divisors is an integer number (207095808).

Almost surely, 2^1538117111 is an apocalyptic number.

1538117111 is a deficient number, since it is larger than the sum of its proper divisors (118649353).

1538117111 is a wasteful number, since it uses less digits than its factorization.

1538117111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2157301.

The product of its digits is 840, while the sum is 29.

The square root of 1538117111 is about 39218.8361760009. The cubic root of 1538117111 is about 1154.3295174682.

The spelling of 1538117111 in words is "one billion, five hundred thirty-eight million, one hundred seventeen thousand, one hundred eleven".