81480954 has 16 divisors (see below), whose sum is σ = 163068192. Its totient is φ = 27142608.

The previous prime is 81480941. The next prime is 81480967. The reversal of 81480954 is 45908418.

It is an interprime number because it is at equal distance from previous prime (81480941) and next prime (81480967).

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, 8397 + ... + 15279.

It is an arithmetic number, because the mean of its divisors is an integer number (10191762).

Almost surely, 2^81480954 is an apocalyptic number.

81480954 is an abundant number, since it is smaller than the sum of its proper divisors (81587238).

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

81480954 is a wasteful number, since it uses less digits than its factorization.

81480954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8861.

The product of its (nonzero) digits is 46080, while the sum is 39.

The square root of 81480954 is about 9026.6801206202. The cubic root of 81480954 is about 433.5295467755.

The spelling of 81480954 in words is "eighty-one million, four hundred eighty thousand, nine hundred fifty-four".