1121509460 has 48 divisors (see below), whose sum is σ = 2440141200. Its totient is φ = 432466944.

The previous prime is 1121509453. The next prime is 1121509513. The reversal of 1121509460 is 649051211.

It can be written as a sum of positive squares in 8 ways, for example, as 67338436 + 1054171024 = 8206^2 + 32468^2 .

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 551726 + ... + 553754.

It is an arithmetic number, because the mean of its divisors is an integer number (50836275).

Almost surely, 2^1121509460 is an apocalyptic number.

1121509460 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 1121509460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1220070600).

1121509460 is an abundant number, since it is smaller than the sum of its proper divisors (1318631740).

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

1121509460 is a wasteful number, since it uses less digits than its factorization.

1121509460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3020 (or 3018 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 1121509460 is about 33488.9453402164. The cubic root of 1121509460 is about 1038.9651503505.

The spelling of 1121509460 in words is "one billion, one hundred twenty-one million, five hundred nine thousand, four hundred sixty".