1121690880 has 108 divisors (see below), whose sum is σ = 3880973460. Its totient is φ = 299114496.

The previous prime is 1121690863. The next prime is 1121690939. The reversal of 1121690880 is 880961211.

It can be written as a sum of positive squares in 2 ways, for example, as 882802944 + 238887936 = 29712^2 + 15456^2 .

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37165 + ... + 60204.

Almost surely, 2^1121690880 is an apocalyptic number.

1121690880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121690880 is an abundant number, since it is smaller than the sum of its proper divisors (2759282580).

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

1121690880 is an equidigital number, since it uses as much as digits as its factorization.

1121690880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97396 (or 97379 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 36.

The square root of 1121690880 is about 33491.6538857071. The cubic root of 1121690880 is about 1039.0211697605.

The spelling of 1121690880 in words is "one billion, one hundred twenty-one million, six hundred ninety thousand, eight hundred eighty".