1671385379 has 8 divisors (see below), whose sum is σ = 1789588080. Its totient is φ = 1555392256.

The previous prime is 1671385363. The next prime is 1671385403. The reversal of 1671385379 is 9735831761.

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 1671385379 - 2⁴ = 1671385363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1671385979) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 550829 + ... + 553854.

It is an arithmetic number, because the mean of its divisors is an integer number (223698510).

Almost surely, 2^1671385379 is an apocalyptic number.

1671385379 is a deficient number, since it is larger than the sum of its proper divisors (118202701).

1671385379 is a wasteful number, since it uses less digits than its factorization.

1671385379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1104789.

The product of its digits is 952560, while the sum is 50.

The square root of 1671385379 is about 40882.5803857829. The cubic root of 1671385379 is about 1186.7489775926.

The spelling of 1671385379 in words is "one billion, six hundred seventy-one million, three hundred eighty-five thousand, three hundred seventy-nine".