1167020749 has 2 divisors, whose sum is σ = 1167020750. Its totient is φ = 1167020748.

The previous prime is 1167020747. The next prime is 1167020779. The reversal of 1167020749 is 9470207611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 942919849 + 224100900 = 30707^2 + 14970^2 .

It is a cyclic number.

It is not a de Polignac number, because 1167020749 - 2¹ = 1167020747 is a prime.

Together with 1167020747, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1167020741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 583510374 + 583510375.

It is an arithmetic number, because the mean of its divisors is an integer number (583510375).

Almost surely, 2^1167020749 is an apocalyptic number.

It is an amenable number.

1167020749 is a deficient number, since it is larger than the sum of its proper divisors (1).

1167020749 is an equidigital number, since it uses as much as digits as its factorization.

1167020749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21168, while the sum is 37.

The square root of 1167020749 is about 34161.6853946055. The cubic root of 1167020749 is about 1052.8330893772.

The spelling of 1167020749 in words is "one billion, one hundred sixty-seven million, twenty thousand, seven hundred forty-nine".