1121977960 has 16 divisors (see below), whose sum is σ = 2524450500. Its totient is φ = 448791168.

The previous prime is 1121977957. The next prime is 1121977991. The reversal of 1121977960 is 697791211.

It can be written as a sum of positive squares in 2 ways, for example, as 1036711204 + 85266756 = 32198^2 + 9234^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14024685 + ... + 14024764.

Almost surely, 2^1121977960 is an apocalyptic number.

1121977960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121977960 is an abundant number, since it is smaller than the sum of its proper divisors (1402472540).

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

1121977960 is a wasteful number, since it uses less digits than its factorization.

1121977960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28049460 (or 28049456 counting only the distinct ones).

The product of its (nonzero) digits is 47628, while the sum is 43.

The square root of 1121977960 is about 33495.9394554027. The cubic root of 1121977960 is about 1039.1098028410.

The spelling of 1121977960 in words is "one billion, one hundred twenty-one million, nine hundred seventy-seven thousand, nine hundred sixty".