2153487340 has 24 divisors (see below), whose sum is σ = 4523304240. Its totient is φ = 861208128.

The previous prime is 2153487337. The next prime is 2153487383. The reversal of 2153487340 is 437843512.

It is a happy number.

2153487340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 2153487340.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117946 + ... + 134974.

It is an arithmetic number, because the mean of its divisors is an integer number (188471010).

Almost surely, 2^2153487340 is an apocalyptic number.

2153487340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2153487340 is an abundant number, since it is smaller than the sum of its proper divisors (2369816900).

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

2153487340 is a wasteful number, since it uses less digits than its factorization.

2153487340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23361 (or 23359 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 37.

The square root of 2153487340 is about 46405.6821951795. The cubic root of 2153487340 is about 1291.3603301194.

The spelling of 2153487340 in words is "two billion, one hundred fifty-three million, four hundred eighty-seven thousand, three hundred forty".