385084481 has 2 divisors, whose sum is σ = 385084482. Its totient is φ = 385084480.

The previous prime is 385084477. The next prime is 385084487. The reversal of 385084481 is 184480583.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 384787456 + 297025 = 19616^2 + 545^2 .

It is a cyclic number.

It is not a de Polignac number, because 385084481 - 2² = 385084477 is a prime.

It is a super-2 number, since 2×385084481² = 296580115014078722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (385084487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192542240 + 192542241.

It is an arithmetic number, because the mean of its divisors is an integer number (192542241).

Almost surely, 2^385084481 is an apocalyptic number.

It is an amenable number.

385084481 is a deficient number, since it is larger than the sum of its proper divisors (1).

385084481 is an equidigital number, since it uses as much as digits as its factorization.

385084481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 122880, while the sum is 41.

The square root of 385084481 is about 19623.5695274840. The cubic root of 385084481 is about 727.5318414833.

The spelling of 385084481 in words is "three hundred eighty-five million, eighty-four thousand, four hundred eighty-one".