1538852081 has 16 divisors (see below), whose sum is σ = 1682049600. Its totient is φ = 1399353408.

The previous prime is 1538852071. The next prime is 1538852113. The reversal of 1538852081 is 1802588351.

It is a cyclic number.

It is not a de Polignac number, because 1538852081 - 2⁶ = 1538852017 is a prime.

It is a super-2 number, since 2×1538852081² = 4736131454396061122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1538852041) 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, 250610 + ... + 256676.

It is an arithmetic number, because the mean of its divisors is an integer number (105128100).

Almost surely, 2^1538852081 is an apocalyptic number.

It is an amenable number.

1538852081 is a deficient number, since it is larger than the sum of its proper divisors (143197519).

1538852081 is a wasteful number, since it uses less digits than its factorization.

1538852081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6368.

The product of its (nonzero) digits is 76800, while the sum is 41.

The square root of 1538852081 is about 39228.2051717893. The cubic root of 1538852081 is about 1154.5133488257.

The spelling of 1538852081 in words is "one billion, five hundred thirty-eight million, eight hundred fifty-two thousand, eighty-one".