2045385671 has 8 divisors (see below), whose sum is σ = 2337859104. Its totient is φ = 1752981120.

The previous prime is 2045385647. The next prime is 2045385691. The reversal of 2045385671 is 1765835402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2045385671 - 2¹⁸ = 2045123527 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2045385691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96491 + ... + 115763.

It is an arithmetic number, because the mean of its divisors is an integer number (292232388).

Almost surely, 2^2045385671 is an apocalyptic number.

2045385671 is a deficient number, since it is larger than the sum of its proper divisors (292473433).

2045385671 is a wasteful number, since it uses less digits than its factorization.

2045385671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34441.

The product of its (nonzero) digits is 201600, while the sum is 41.

The square root of 2045385671 is about 45225.9402445101. The cubic root of 2045385671 is about 1269.3802483823.

The spelling of 2045385671 in words is "two billion, forty-five million, three hundred eighty-five thousand, six hundred seventy-one".