81130962 has 16 divisors (see below), whose sum is σ = 177013152. Its totient is φ = 24585120.

The previous prime is 81130957. The next prime is 81130967. The reversal of 81130962 is 26903118.

It is an interprime number because it is at equal distance from previous prime (81130957) and next prime (81130967).

It is not an unprimeable number, because it can be changed into a prime (81130967) 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, 614563 + ... + 614694.

It is an arithmetic number, because the mean of its divisors is an integer number (11063322).

Almost surely, 2^81130962 is an apocalyptic number.

81130962 is an abundant number, since it is smaller than the sum of its proper divisors (95882190).

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

81130962 is a wasteful number, since it uses less digits than its factorization.

81130962 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1229273.

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 81130962 is about 9007.2727281903. The cubic root of 81130962 is about 432.9079305798.

The spelling of 81130962 in words is "eighty-one million, one hundred thirty thousand, nine hundred sixty-two".