1121551536 has 40 divisors (see below), whose sum is σ = 3311248384. Its totient is φ = 320443200.

The previous prime is 1121551531. The next prime is 1121551537. The reversal of 1121551536 is 6351551211.

It is not an unprimeable number, because it can be changed into a prime (1121551531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1668640 + ... + 1669311.

Almost surely, 2^1121551536 is an apocalyptic number.

1121551536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1121551536 is an abundant number, since it is smaller than the sum of its proper divisors (2189696848).

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

1121551536 is a wasteful number, since it uses less digits than its factorization.

1121551536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3337969 (or 3337963 counting only the distinct ones).

The product of its digits is 4500, while the sum is 30.

The square root of 1121551536 is about 33489.5735416264. The cubic root of 1121551536 is about 1038.9781432416.

The spelling of 1121551536 in words is "one billion, one hundred twenty-one million, five hundred fifty-one thousand, five hundred thirty-six".