385241851 has 2 divisors, whose sum is σ = 385241852. Its totient is φ = 385241850.

The previous prime is 385241849. The next prime is 385241897. The reversal of 385241851 is 158142583.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 385241851 - 2¹ = 385241849 is a prime.

It is a super-2 number, since 2×385241851² = 296822567523812402, which contains 22 as substring.

Together with 385241849, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 385241851.

It is not a weakly prime, because it can be changed into another prime (385241821) 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 as a sum of consecutive naturals, namely, 192620925 + 192620926.

It is an arithmetic number, because the mean of its divisors is an integer number (192620926).

Almost surely, 2^385241851 is an apocalyptic number.

385241851 is a deficient number, since it is larger than the sum of its proper divisors (1).

385241851 is an equidigital number, since it uses as much as digits as its factorization.

385241851 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 38400, while the sum is 37.

The square root of 385241851 is about 19627.5788369325. The cubic root of 385241851 is about 727.6309332401.

The spelling of 385241851 in words is "three hundred eighty-five million, two hundred forty-one thousand, eight hundred fifty-one".