1671438311 has 4 divisors (see below), whose sum is σ = 1673967624. Its totient is φ = 1668909000.

The previous prime is 1671438281. The next prime is 1671438319. The reversal of 1671438311 is 1138341761.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1671438311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1671438319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1263665 + ... + 1264986.

It is an arithmetic number, because the mean of its divisors is an integer number (418491906).

Almost surely, 2^1671438311 is an apocalyptic number.

1671438311 is a deficient number, since it is larger than the sum of its proper divisors (2529313).

1671438311 is an equidigital number, since it uses as much as digits as its factorization.

1671438311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2529312.

The product of its digits is 12096, while the sum is 35.

The square root of 1671438311 is about 40883.2277468401. The cubic root of 1671438311 is about 1186.7615053904.

The spelling of 1671438311 in words is "one billion, six hundred seventy-one million, four hundred thirty-eight thousand, three hundred eleven".