2145140998 has 144 divisors (see below), whose sum is σ = 4486164480. Its totient is φ = 752431680.

The previous prime is 2145140993. The next prime is 2145140999. The reversal of 2145140998 is 8990415412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145140993) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 16890811 + ... + 16890937.

It is an arithmetic number, because the mean of its divisors is an integer number (31153920).

Almost surely, 2^2145140998 is an apocalyptic number.

2145140998 is an abundant number, since it is smaller than the sum of its proper divisors (2341023482).

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

2145140998 is a wasteful number, since it uses less digits than its factorization.

2145140998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243 (or 219 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 43.

The square root of 2145140998 is about 46315.6668741798. Note that the first 3 decimals coincide. The cubic root of 2145140998 is about 1289.6898475166.

The spelling of 2145140998 in words is "two billion, one hundred forty-five million, one hundred forty thousand, nine hundred ninety-eight".