2135385240 has 32 divisors (see below), whose sum is σ = 6406156080. Its totient is φ = 569436032.

The previous prime is 2135385233. The next prime is 2135385271. The reversal of 2135385240 is 425835312.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8897319 + ... + 8897558.

Almost surely, 2^2135385240 is an apocalyptic number.

2135385240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2135385240 is an abundant number, since it is smaller than the sum of its proper divisors (4270770840).

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

2135385240 is a wasteful number, since it uses less digits than its factorization.

2135385240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17794891 (or 17794887 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 33.

The square root of 2135385240 is about 46210.2287378022. The cubic root of 2135385240 is about 1287.7317751585.

The spelling of 2135385240 in words is "two billion, one hundred thirty-five million, three hundred eighty-five thousand, two hundred forty".