11671851 has 8 divisors (see below), whose sum is σ = 15662224. Its totient is φ = 7731360.

The previous prime is 11671837. The next prime is 11671853. The reversal of 11671851 is 15817611.

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

It is not a de Polignac number, because 11671851 - 2¹⁴ = 11655467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11671853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11920 + ... + 12861.

It is an arithmetic number, because the mean of its divisors is an integer number (1957778).

Almost surely, 2^11671851 is an apocalyptic number.

11671851 is a deficient number, since it is larger than the sum of its proper divisors (3990373).

11671851 is a wasteful number, since it uses less digits than its factorization.

11671851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24941.

The product of its digits is 1680, while the sum is 30.

The square root of 11671851 is about 3416.4090797210. The cubic root of 11671851 is about 226.8366604916.

Subtracting 11671851 from its reverse (15817611), we obtain a triangular number (4145760 = T₂₈₇₉).

The spelling of 11671851 in words is "eleven million, six hundred seventy-one thousand, eight hundred fifty-one".