167881541 has 2 divisors, whose sum is σ = 167881542. Its totient is φ = 167881540.

The previous prime is 167881481. The next prime is 167881547. The reversal of 167881541 is 145188761.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 167159041 + 722500 = 12929^2 + 850^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-167881541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (167881547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83940770 + 83940771.

It is an arithmetic number, because the mean of its divisors is an integer number (83940771).

Almost surely, 2^167881541 is an apocalyptic number.

It is an amenable number.

167881541 is a deficient number, since it is larger than the sum of its proper divisors (1).

167881541 is an equidigital number, since it uses as much as digits as its factorization.

167881541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 53760, while the sum is 41.

The square root of 167881541 is about 12956.9109358674. The cubic root of 167881541 is about 551.6551145445.

The spelling of 167881541 in words is "one hundred sixty-seven million, eight hundred eighty-one thousand, five hundred forty-one".