378018533 has 2 divisors, whose sum is σ = 378018534. Its totient is φ = 378018532.

The previous prime is 378018523. The next prime is 378018569. The reversal of 378018533 is 335810873.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 372991969 + 5026564 = 19313^2 + 2242^2 .

It is an emirp because it is prime and its reverse (335810873) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 378018533 - 2⁶ = 378018469 is a prime.

It is a super-2 number, since 2×378018533² = 285796022582944178, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (378018503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189009266 + 189009267.

It is an arithmetic number, because the mean of its divisors is an integer number (189009267).

Almost surely, 2^378018533 is an apocalyptic number.

It is an amenable number.

378018533 is a deficient number, since it is larger than the sum of its proper divisors (1).

378018533 is an equidigital number, since it uses as much as digits as its factorization.

378018533 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 378018533 is about 19442.6987067125. The cubic root of 378018533 is about 723.0544957702.

The spelling of 378018533 in words is "three hundred seventy-eight million, eighteen thousand, five hundred thirty-three".