1081869552 has 60 divisors (see below), whose sum is σ = 3034899504. Its totient is φ = 359769600.

The previous prime is 1081869533. The next prime is 1081869553. The reversal of 1081869552 is 2559681801.

It is a happy number.

1081869552 is a `hidden beast` number, since 10 + 8 + 1 + 86 + 9 + 552 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1081869498 and 1081869507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1081869553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 53677 + ... + 71027.

Almost surely, 2^1081869552 is an apocalyptic number.

1081869552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1081869552 is an abundant number, since it is smaller than the sum of its proper divisors (1953029952).

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

1081869552 is a wasteful number, since it uses less digits than its factorization.

1081869552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17798 (or 17789 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 45.

The square root of 1081869552 is about 32891.7854790524. The cubic root of 1081869552 is about 1026.5772431999.

The spelling of 1081869552 in words is "one billion, eighty-one million, eight hundred sixty-nine thousand, five hundred fifty-two".