1081291667 has 2 divisors, whose sum is σ = 1081291668. Its totient is φ = 1081291666.

The previous prime is 1081291661. The next prime is 1081291711. The reversal of 1081291667 is 7661921801.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1081291667 - 2¹⁰ = 1081290643 is a prime.

It is not a weakly prime, because it can be changed into another prime (1081291661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 540645833 + 540645834.

It is an arithmetic number, because the mean of its divisors is an integer number (540645834).

Almost surely, 2^1081291667 is an apocalyptic number.

1081291667 is a deficient number, since it is larger than the sum of its proper divisors (1).

1081291667 is an equidigital number, since it uses as much as digits as its factorization.

1081291667 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 41.

The square root of 1081291667 is about 32882.9996654806. Note that the first 3 decimals coincide. The cubic root of 1081291667 is about 1026.3944271823.

The spelling of 1081291667 in words is "one billion, eighty-one million, two hundred ninety-one thousand, six hundred sixty-seven".