2145537168 has 40 divisors (see below), whose sum is σ = 5563745088. Its totient is φ = 712455552.

The previous prime is 2145537161. The next prime is 2145537193. The reversal of 2145537168 is 8617355412.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2145537161) 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, 72355 + ... + 97602.

Almost surely, 2^2145537168 is an apocalyptic number.

It is an amenable number.

2145537168 is an abundant number, since it is smaller than the sum of its proper divisors (3418207920).

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

2145537168 is a wasteful number, since it uses less digits than its factorization.

2145537168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170231 (or 170225 counting only the distinct ones).

The product of its digits is 201600, while the sum is 42.

The square root of 2145537168 is about 46319.9435232816. The cubic root of 2145537168 is about 1289.7692370107.

The spelling of 2145537168 in words is "two billion, one hundred forty-five million, five hundred thirty-seven thousand, one hundred sixty-eight".