81882351 has 12 divisors (see below), whose sum is σ = 118438320. Its totient is φ = 54512640.

The previous prime is 81882349. The next prime is 81882389. The reversal of 81882351 is 15328818.

It is not a de Polignac number, because 81882351 - 2¹ = 81882349 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81882751) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1006 + ... + 12836.

It is an arithmetic number, because the mean of its divisors is an integer number (9869860).

Almost surely, 2^81882351 is an apocalyptic number.

81882351 is a deficient number, since it is larger than the sum of its proper divisors (36555969).

81882351 is a wasteful number, since it uses less digits than its factorization.

81882351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12606 (or 12603 counting only the distinct ones).

The product of its digits is 15360, while the sum is 36.

The square root of 81882351 is about 9048.8867271063. The cubic root of 81882351 is about 434.2402751861.

The spelling of 81882351 in words is "eighty-one million, eight hundred eighty-two thousand, three hundred fifty-one".