381546413 has 2 divisors, whose sum is σ = 381546414. Its totient is φ = 381546412.

The previous prime is 381546409. The next prime is 381546437. The reversal of 381546413 is 314645183.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 243765769 + 137780644 = 15613^2 + 11738^2 .

It is a cyclic number.

It is not a de Polignac number, because 381546413 - 2² = 381546409 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (381546463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190773206 + 190773207.

It is an arithmetic number, because the mean of its divisors is an integer number (190773207).

Almost surely, 2^381546413 is an apocalyptic number.

It is an amenable number.

381546413 is a deficient number, since it is larger than the sum of its proper divisors (1).

381546413 is an equidigital number, since it uses as much as digits as its factorization.

381546413 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34560, while the sum is 35.

The square root of 381546413 is about 19533.2130741463. The cubic root of 381546413 is about 725.2968506142.

It can be divided in two parts, 38 and 1546413, that added together give a palindrome (1546451).

The spelling of 381546413 in words is "three hundred eighty-one million, five hundred forty-six thousand, four hundred thirteen".