1139903540 has 12 divisors (see below), whose sum is σ = 2393797476. Its totient is φ = 455961408.

The previous prime is 1139903539. The next prime is 1139903599. The reversal of 1139903540 is 453099311.

It can be written as a sum of positive squares in 2 ways, for example, as 772951204 + 366952336 = 27802^2 + 19156^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1139903540.

It is a congruent number.

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, 28497569 + ... + 28497608.

It is an arithmetic number, because the mean of its divisors is an integer number (199483123).

Almost surely, 2^1139903540 is an apocalyptic number.

1139903540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1139903540 is an abundant number, since it is smaller than the sum of its proper divisors (1253893936).

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

1139903540 is a wasteful number, since it uses less digits than its factorization.

1139903540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56995186 (or 56995184 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 35.

The square root of 1139903540 is about 33762.4575527316. The cubic root of 1139903540 is about 1044.6144621453.

The spelling of 1139903540 in words is "one billion, one hundred thirty-nine million, nine hundred three thousand, five hundred forty".