1137731197 has 2 divisors, whose sum is σ = 1137731198. Its totient is φ = 1137731196.

The previous prime is 1137731183. The next prime is 1137731227. The reversal of 1137731197 is 7911377311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 998939236 + 138791961 = 31606^2 + 11781^2 .

It is a cyclic number.

It is not a de Polignac number, because 1137731197 - 2¹¹ = 1137729149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1137731297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 568865598 + 568865599.

It is an arithmetic number, because the mean of its divisors is an integer number (568865599).

Almost surely, 2^1137731197 is an apocalyptic number.

It is an amenable number.

1137731197 is a deficient number, since it is larger than the sum of its proper divisors (1).

1137731197 is an equidigital number, since it uses as much as digits as its factorization.

1137731197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27783, while the sum is 40.

The square root of 1137731197 is about 33730.2712263035. The cubic root of 1137731197 is about 1043.9504574314.

The spelling of 1137731197 in words is "one billion, one hundred thirty-seven million, seven hundred thirty-one thousand, one hundred ninety-seven".