81416130 has 16 divisors (see below), whose sum is σ = 195398784. Its totient is φ = 21710960.

The previous prime is 81416129. The next prime is 81416131. The reversal of 81416130 is 3161418.

It is an interprime number because it is at equal distance from previous prime (81416129) and next prime (81416131).

It is a self number, because there is not a number n which added to its sum of digits gives 81416130.

It is not an unprimeable number, because it can be changed into a prime (81416131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1356906 + ... + 1356965.

It is an arithmetic number, because the mean of its divisors is an integer number (12212424).

Almost surely, 2^81416130 is an apocalyptic number.

81416130 is an abundant number, since it is smaller than the sum of its proper divisors (113982654).

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

81416130 is a wasteful number, since it uses less digits than its factorization.

81416130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2713881.

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 81416130 is about 9023.0887172852. The cubic root of 81416130 is about 433.4145482229.

Adding to 81416130 its reverse (3161418), we get a palindrome (84577548).

The spelling of 81416130 in words is "eighty-one million, four hundred sixteen thousand, one hundred thirty".