81941094 has 12 divisors (see below), whose sum is σ = 177539076. Its totient is φ = 27313692.

The previous prime is 81941089. The next prime is 81941107. The reversal of 81941094 is 49014918.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2276124 + ... + 2276159.

It is an arithmetic number, because the mean of its divisors is an integer number (14794923).

Almost surely, 2^81941094 is an apocalyptic number.

81941094 is an abundant number, since it is smaller than the sum of its proper divisors (95597982).

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

81941094 is a wasteful number, since it uses less digits than its factorization.

81941094 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4552291 (or 4552288 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 81941094 is about 9052.1320140617. The cubic root of 81941094 is about 434.3440927511.

The spelling of 81941094 in words is "eighty-one million, nine hundred forty-one thousand, ninety-four".