470185861 has 2 divisors, whose sum is σ = 470185862. Its totient is φ = 470185860.

The previous prime is 470185841. The next prime is 470185867. The reversal of 470185861 is 168581074.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 361380100 + 108805761 = 19010^2 + 10431^2 .

It is a cyclic number.

It is not a de Polignac number, because 470185861 - 2⁵ = 470185829 is a prime.

It is a super-2 number, since 2×470185861² = 442149487768622642, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (470185867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 235092930 + 235092931.

It is an arithmetic number, because the mean of its divisors is an integer number (235092931).

Almost surely, 2^470185861 is an apocalyptic number.

It is an amenable number.

470185861 is a deficient number, since it is larger than the sum of its proper divisors (1).

470185861 is an equidigital number, since it uses as much as digits as its factorization.

470185861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 53760, while the sum is 40.

The square root of 470185861 is about 21683.7695293046. The cubic root of 470185861 is about 777.6004831481.

It can be divided in two parts, 470185 and 861, that multiplied together give a triangular number (404829285 = T₂₈₄₅₄).

The spelling of 470185861 in words is "four hundred seventy million, one hundred eighty-five thousand, eight hundred sixty-one".