2129049018 has 12 divisors (see below), whose sum is σ = 4612939578. Its totient is φ = 709683000.

The previous prime is 2129049001. The next prime is 2129049029. The reversal of 2129049018 is 8109409212.

It can be written as a sum of positive squares in only one way, i.e., 1645356969 + 483692049 = 40563^2 + 21993^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 59140233 + ... + 59140268.

Almost surely, 2^2129049018 is an apocalyptic number.

2129049018 is an abundant number, since it is smaller than the sum of its proper divisors (2483890560).

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

2129049018 is a wasteful number, since it uses less digits than its factorization.

2129049018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118280509 (or 118280506 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 2129049018 is about 46141.6191523444. The cubic root of 2129049018 is about 1286.4568392418.

The spelling of 2129049018 in words is "two billion, one hundred twenty-nine million, forty-nine thousand, eighteen".