1167842381 has 2 divisors, whose sum is σ = 1167842382. Its totient is φ = 1167842380.

The previous prime is 1167842371. The next prime is 1167842399. The reversal of 1167842381 is 1832487611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1156680100 + 11162281 = 34010^2 + 3341^2 .

It is a cyclic number.

It is not a de Polignac number, because 1167842381 - 2⁶ = 1167842317 is a prime.

It is a super-2 number, since 2×1167842381² = 2727711653719498322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1167842371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 583921190 + 583921191.

It is an arithmetic number, because the mean of its divisors is an integer number (583921191).

Almost surely, 2^1167842381 is an apocalyptic number.

It is an amenable number.

1167842381 is a deficient number, since it is larger than the sum of its proper divisors (1).

1167842381 is an equidigital number, since it uses as much as digits as its factorization.

1167842381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64512, while the sum is 41.

The square root of 1167842381 is about 34173.7089148954. The cubic root of 1167842381 is about 1053.0801110999.

The spelling of 1167842381 in words is "one billion, one hundred sixty-seven million, eight hundred forty-two thousand, three hundred eighty-one".