1081497312 has 96 divisors (see below), whose sum is σ = 3605011200. Its totient is φ = 308997504.

The previous prime is 1081497311. The next prime is 1081497323. The reversal of 1081497312 is 2137941801.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1081497311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83362 + ... + 95457.

It is an arithmetic number, because the mean of its divisors is an integer number (37552200).

Almost surely, 2^1081497312 is an apocalyptic number.

1081497312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1081497312 is an abundant number, since it is smaller than the sum of its proper divisors (2523513888).

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

1081497312 is a wasteful number, since it uses less digits than its factorization.

1081497312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178845 (or 178831 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 1081497312 is about 32886.1264365386. The cubic root of 1081497312 is about 1026.4594911882.

The spelling of 1081497312 in words is "one billion, eighty-one million, four hundred ninety-seven thousand, three hundred twelve".