1319105540 has 24 divisors (see below), whose sum is σ = 2777046552. Its totient is φ = 526323200.

The previous prime is 1319105519. The next prime is 1319105549. The reversal of 1319105540 is 455019131.

It can be written as a sum of positive squares in 4 ways, for example, as 126922756 + 1192182784 = 11266^2 + 34528^2 .

It is not an unprimeable number, because it can be changed into a prime (1319105549) 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, 74219 + ... + 90258.

It is an arithmetic number, because the mean of its divisors is an integer number (115710273).

Almost surely, 2^1319105540 is an apocalyptic number.

1319105540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1319105540 is an abundant number, since it is smaller than the sum of its proper divisors (1457941012).

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

1319105540 is a wasteful number, since it uses less digits than its factorization.

1319105540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164887 (or 164885 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 29.

The square root of 1319105540 is about 36319.4925625345. The cubic root of 1319105540 is about 1096.7134797487.

The spelling of 1319105540 in words is "one billion, three hundred nineteen million, one hundred five thousand, five hundred forty".