1121503507 has 16 divisors (see below), whose sum is σ = 1152360000. Its totient is φ = 1091211264.

The previous prime is 1121503489. The next prime is 1121503543. The reversal of 1121503507 is 7053051211.

It is a cyclic number.

It is not a de Polignac number, because 1121503507 - 2¹⁹ = 1120979219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121503577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1871994 + ... + 1872592.

It is an arithmetic number, because the mean of its divisors is an integer number (72022500).

Almost surely, 2^1121503507 is an apocalyptic number.

1121503507 is a deficient number, since it is larger than the sum of its proper divisors (30856493).

1121503507 is a wasteful number, since it uses less digits than its factorization.

1121503507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 990.

The product of its (nonzero) digits is 1050, while the sum is 25.

The square root of 1121503507 is about 33488.8564600226. The cubic root of 1121503507 is about 1038.9633120630.

Adding to 1121503507 its reverse (7053051211), we get a palindrome (8174554718).

The spelling of 1121503507 in words is "one billion, one hundred twenty-one million, five hundred three thousand, five hundred seven".