1121666004 has 36 divisors (see below), whose sum is σ = 2863404180. Its totient is φ = 370185600.

The previous prime is 1121666003. The next prime is 1121666033. The reversal of 1121666004 is 4006661211.

It can be written as a sum of positive squares in 2 ways, for example, as 879241104 + 242424900 = 29652^2 + 15570^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121666003) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 150609 + ... + 157880.

It is an arithmetic number, because the mean of its divisors is an integer number (79539005).

Almost surely, 2^1121666004 is an apocalyptic number.

It is an amenable number.

1121666004 is an abundant number, since it is smaller than the sum of its proper divisors (1741738176).

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

1121666004 is a wasteful number, since it uses less digits than its factorization.

1121666004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308600 (or 308595 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 1121666004 is about 33491.2825075422. The cubic root of 1121666004 is about 1039.0134888322.

The spelling of 1121666004 in words is "one billion, one hundred twenty-one million, six hundred sixty-six thousand, four".