81482907 has 16 divisors (see below), whose sum is σ = 118798848. Its totient is φ = 49267680.

The previous prime is 81482903. The next prime is 81482939. The reversal of 81482907 is 70928418.

It is not a de Polignac number, because 81482907 - 2² = 81482903 is a prime.

It is not an unprimeable number, because it can be changed into a prime (81482903) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12613 + ... + 17945.

It is an arithmetic number, because the mean of its divisors is an integer number (7424928).

Almost surely, 2^81482907 is an apocalyptic number.

81482907 is a deficient number, since it is larger than the sum of its proper divisors (37315941).

81482907 is a wasteful number, since it uses less digits than its factorization.

81482907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5810.

The product of its (nonzero) digits is 32256, while the sum is 39.

The square root of 81482907 is about 9026.7882992790. The cubic root of 81482907 is about 433.5330104743.

The spelling of 81482907 in words is "eighty-one million, four hundred eighty-two thousand, nine hundred seven".