1128737140 has 12 divisors (see below), whose sum is σ = 2370348036. Its totient is φ = 451494848.

The previous prime is 1128737111. The next prime is 1128737149. The reversal of 1128737140 is 417378211.

It can be written as a sum of positive squares in 2 ways, for example, as 762091236 + 366645904 = 27606^2 + 19148^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1128737096 and 1128737105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1128737149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28218409 + ... + 28218448.

It is an arithmetic number, because the mean of its divisors is an integer number (197529003).

Almost surely, 2^1128737140 is an apocalyptic number.

1128737140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1128737140 is an abundant number, since it is smaller than the sum of its proper divisors (1241610896).

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

1128737140 is a wasteful number, since it uses less digits than its factorization.

1128737140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56436866 (or 56436864 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 34.

The square root of 1128737140 is about 33596.6834672710. The cubic root of 1128737140 is about 1041.1922778423.

The spelling of 1128737140 in words is "one billion, one hundred twenty-eight million, seven hundred thirty-seven thousand, one hundred forty".