2389995540 has 36 divisors (see below), whose sum is σ = 7249653684. Its totient is φ = 637332096.

The previous prime is 2389995511. The next prime is 2389995557. The reversal of 2389995540 is 455999832.

It is a happy number.

2389995540 is a `hidden beast` number, since 2 + 3 + 8 + 9 + 9 + 95 + 540 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1372257936 + 1017737604 = 37044^2 + 31902^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 6638697 + ... + 6639056.

It is an arithmetic number, because the mean of its divisors is an integer number (201379269).

Almost surely, 2^2389995540 is an apocalyptic number.

2389995540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2389995540 is an abundant number, since it is smaller than the sum of its proper divisors (4859658144).

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

2389995540 is a wasteful number, since it uses less digits than its factorization.

2389995540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13277768 (or 13277763 counting only the distinct ones).

The product of its (nonzero) digits is 3499200, while the sum is 54.

The square root of 2389995540 is about 48887.5806314855. The cubic root of 2389995540 is about 1337.0029438426.

The spelling of 2389995540 in words is "two billion, three hundred eighty-nine million, nine hundred ninety-five thousand, five hundred forty".