1137749161 has 2 divisors, whose sum is σ = 1137749162. Its totient is φ = 1137749160.

The previous prime is 1137749153. The next prime is 1137749233. The reversal of 1137749161 is 1619477311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 678289936 + 459459225 = 26044^2 + 21435^2 .

It is a cyclic number.

It is not a de Polignac number, because 1137749161 - 2³ = 1137749153 is a prime.

It is not a weakly prime, because it can be changed into another prime (1137749111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 568874580 + 568874581.

It is an arithmetic number, because the mean of its divisors is an integer number (568874581).

Almost surely, 2^1137749161 is an apocalyptic number.

It is an amenable number.

1137749161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1137749161 is an equidigital number, since it uses as much as digits as its factorization.

1137749161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31752, while the sum is 40.

The square root of 1137749161 is about 33730.5375142466. The cubic root of 1137749161 is about 1043.9559518245.

The spelling of 1137749161 in words is "one billion, one hundred thirty-seven million, seven hundred forty-nine thousand, one hundred sixty-one".