810549132 has 24 divisors (see below), whose sum is σ = 1901735472. Its totient is φ = 268689600.

The previous prime is 810549119. The next prime is 810549133. The reversal of 810549132 is 231945018.

It is a junction number, because it is equal to n+sod(n) for n = 810549093 and 810549102.

It is not an unprimeable number, because it can be changed into a prime (810549133) 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, 184419 + ... + 188762.

It is an arithmetic number, because the mean of its divisors is an integer number (79238978).

Almost surely, 2^810549132 is an apocalyptic number.

It is an amenable number.

810549132 is an abundant number, since it is smaller than the sum of its proper divisors (1091186340).

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

810549132 is a wasteful number, since it uses less digits than its factorization.

810549132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373369 (or 373367 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 810549132 is about 28470.1445728679. The cubic root of 810549132 is about 932.3803561516.

The spelling of 810549132 in words is "eight hundred ten million, five hundred forty-nine thousand, one hundred thirty-two".