867461381 has 2 divisors, whose sum is σ = 867461382. Its totient is φ = 867461380.

The previous prime is 867461377. The next prime is 867461417. The reversal of 867461381 is 183164768.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 866772481 + 688900 = 29441^2 + 830^2 .

It is a cyclic number.

It is not a de Polignac number, because 867461381 - 2² = 867461377 is a prime.

It is a super-2 number, since 2×867461381² = 1504978495052854322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (867461341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 433730690 + 433730691.

It is an arithmetic number, because the mean of its divisors is an integer number (433730691).

Almost surely, 2^867461381 is an apocalyptic number.

It is an amenable number.

867461381 is a deficient number, since it is larger than the sum of its proper divisors (1).

867461381 is an equidigital number, since it uses as much as digits as its factorization.

867461381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 193536, while the sum is 44.

The square root of 867461381 is about 29452.6973467627. The cubic root of 867461381 is about 953.7108345578.

The spelling of 867461381 in words is "eight hundred sixty-seven million, four hundred sixty-one thousand, three hundred eighty-one".