81462113 has 16 divisors (see below), whose sum is σ = 91725696. Its totient is φ = 71934720.

The previous prime is 81462091. The next prime is 81462137. The reversal of 81462113 is 31126418.

It is a cyclic number.

It is not a de Polignac number, because 81462113 - 2¹² = 81458017 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (81462013) 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, 18758 + ... + 22688.

It is an arithmetic number, because the mean of its divisors is an integer number (5732856).

Almost surely, 2^81462113 is an apocalyptic number.

It is an amenable number.

81462113 is a deficient number, since it is larger than the sum of its proper divisors (10263583).

81462113 is a wasteful number, since it uses less digits than its factorization.

81462113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4024.

The product of its digits is 1152, while the sum is 26.

The square root of 81462113 is about 9025.6364318534. The cubic root of 81462113 is about 433.4961289053.

The spelling of 81462113 in words is "eighty-one million, four hundred sixty-two thousand, one hundred thirteen".