385474381 has 2 divisors, whose sum is σ = 385474382. Its totient is φ = 385474380.

The previous prime is 385474361. The next prime is 385474391. The reversal of 385474381 is 183474583.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 277522281 + 107952100 = 16659^2 + 10390^2 .

It is a cyclic number.

It is not a de Polignac number, because 385474381 - 2¹³ = 385466189 is a prime.

It is a super-2 number, since 2×385474381² = 297180996814666322, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (385474361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192737190 + 192737191.

It is an arithmetic number, because the mean of its divisors is an integer number (192737191).

Almost surely, 2^385474381 is an apocalyptic number.

It is an amenable number.

385474381 is a deficient number, since it is larger than the sum of its proper divisors (1).

385474381 is an equidigital number, since it uses as much as digits as its factorization.

385474381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 322560, while the sum is 43.

The square root of 385474381 is about 19633.5014961672. The cubic root of 385474381 is about 727.7773018914. Note that the first 3 decimals are identical.

The spelling of 385474381 in words is "three hundred eighty-five million, four hundred seventy-four thousand, three hundred eighty-one".