81094630 has 16 divisors (see below), whose sum is σ = 146362320. Its totient is φ = 32350752.

The previous prime is 81094627. The next prime is 81094649. The reversal of 81094630 is 3649018.

It is a junction number, because it is equal to n+sod(n) for n = 81094592 and 81094601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6909 + ... + 14488.

It is an arithmetic number, because the mean of its divisors is an integer number (9147645).

Almost surely, 2^81094630 is an apocalyptic number.

81094630 is a deficient number, since it is larger than the sum of its proper divisors (65267690).

81094630 is a wasteful number, since it uses less digits than its factorization.

81094630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21783.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 81094630 is about 9005.2556876526. The cubic root of 81094630 is about 432.8432994412.

The spelling of 81094630 in words is "eighty-one million, ninety-four thousand, six hundred thirty".