1830138931971 has 96 divisors (see below), whose sum is σ = 3132101513216. Its totient is φ = 1007699616000.

The previous prime is 1830138931963. The next prime is 1830138931991. The reversal of 1830138931971 is 1791398310381.

1830138931971 is a `hidden beast` number, since 18 + 301 + 3 + 8 + 9 + 319 + 7 + 1 = 666.

It is not a de Polignac number, because 1830138931971 - 2³ = 1830138931963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1830138931931) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 512498616 + ... + 512502186.

Almost surely, 2^{1830138931971} is an apocalyptic number.

1830138931971 is a deficient number, since it is larger than the sum of its proper divisors (1301962581245).

1830138931971 is a wasteful number, since it uses less digits than its factorization.

1830138931971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4673 (or 4670 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 54.

The spelling of 1830138931971 in words is "one trillion, eight hundred thirty billion, one hundred thirty-eight million, nine hundred thirty-one thousand, nine hundred seventy-one".