81469386 has 24 divisors (see below), whose sum is σ = 176816640. Its totient is φ = 27110376.

The previous prime is 81469373. The next prime is 81469393. The reversal of 81469386 is 68396418.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8055 + ... + 15093.

It is an arithmetic number, because the mean of its divisors is an integer number (7367360).

Almost surely, 2^81469386 is an apocalyptic number.

81469386 is an abundant number, since it is smaller than the sum of its proper divisors (95347254).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

81469386 is a wasteful number, since it uses less digits than its factorization.

81469386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7690 (or 7687 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 81469386 is about 9026.0393307364. The cubic root of 81469386 is about 433.5090294771.

The spelling of 81469386 in words is "eighty-one million, four hundred sixty-nine thousand, three hundred eighty-six".