81241194 has 16 divisors (see below), whose sum is σ = 162911232. Its totient is φ = 27008928.

The previous prime is 81241187. The next prime is 81241201. The reversal of 81241194 is 49114218.

It is an interprime number because it is at equal distance from previous prime (81241187) and next prime (81241201).

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, 15379 + ... + 19974.

It is an arithmetic number, because the mean of its divisors is an integer number (10181952).

Almost surely, 2^81241194 is an apocalyptic number.

81241194 is an abundant number, since it is smaller than the sum of its proper divisors (81670038).

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

81241194 is a wasteful number, since it uses less digits than its factorization.

81241194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35741.

The product of its digits is 2304, while the sum is 30.

The square root of 81241194 is about 9013.3897064312. The cubic root of 81241194 is about 433.1039047173.

The spelling of 81241194 in words is "eighty-one million, two hundred forty-one thousand, one hundred ninety-four".