2043430501538 has 4 divisors (see below), whose sum is σ = 3065145752310. Its totient is φ = 1021715250768.

The previous prime is 2043430501537. The next prime is 2043430501577. The reversal of 2043430501538 is 8351050343402.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1829697191569 + 213733309969 = 1352663^2 + 462313^2 .

It is not an unprimeable number, because it can be changed into a prime (2043430501537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510857625383 + ... + 510857625386.

Almost surely, 2^{2043430501538} is an apocalyptic number.

2043430501538 is a deficient number, since it is larger than the sum of its proper divisors (1021715250772).

2043430501538 is a wasteful number, since it uses less digits than its factorization.

2043430501538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1021715250771.

The product of its (nonzero) digits is 172800, while the sum is 38.

The spelling of 2043430501538 in words is "two trillion, forty-three billion, four hundred thirty million, five hundred one thousand, five hundred thirty-eight".