1089515740 has 12 divisors (see below), whose sum is σ = 2287983096. Its totient is φ = 435806288.

The previous prime is 1089515719. The next prime is 1089515741. The reversal of 1089515740 is 475159801.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1089515693 and 1089515702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1089515741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27237874 + ... + 27237913.

It is an arithmetic number, because the mean of its divisors is an integer number (190665258).

Almost surely, 2^1089515740 is an apocalyptic number.

1089515740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1089515740 is an abundant number, since it is smaller than the sum of its proper divisors (1198467356).

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

1089515740 is a wasteful number, since it uses less digits than its factorization.

1089515740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54475796 (or 54475794 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 40.

The square root of 1089515740 is about 33007.8133174556. The cubic root of 1089515740 is about 1028.9900364938.

The spelling of 1089515740 in words is "one billion, eighty-nine million, five hundred fifteen thousand, seven hundred forty".