1081969680 has 320 divisors, whose sum is σ = 3877466112. Its totient is φ = 247019520.

The previous prime is 1081969663. The next prime is 1081969697. The reversal of 1081969680 is 869691801.

It is an interprime number because it is at equal distance from previous prime (1081969663) and next prime (1081969697).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 6254074 + ... + 6254246.

Almost surely, 2^1081969680 is an apocalyptic number.

1081969680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1081969680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1938733056).

1081969680 is an abundant number, since it is smaller than the sum of its proper divisors (2795496432).

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

1081969680 is a wasteful number, since it uses less digits than its factorization.

1081969680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326 (or 320 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 48.

The square root of 1081969680 is about 32893.3075259999. The cubic root of 1081969680 is about 1026.6089124386.

The spelling of 1081969680 in words is "one billion, eighty-one million, nine hundred sixty-nine thousand, six hundred eighty".