1137421777 has 2 divisors, whose sum is σ = 1137421778. Its totient is φ = 1137421776.

The previous prime is 1137421759. The next prime is 1137421819. The reversal of 1137421777 is 7771247311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1086954961 + 50466816 = 32969^2 + 7104^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1137421777 is a prime.

It is not a weakly prime, because it can be changed into another prime (1137421177) 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, 568710888 + 568710889.

It is an arithmetic number, because the mean of its divisors is an integer number (568710889).

Almost surely, 2^1137421777 is an apocalyptic number.

It is an amenable number.

1137421777 is a deficient number, since it is larger than the sum of its proper divisors (1).

1137421777 is an equidigital number, since it uses as much as digits as its factorization.

1137421777 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 57624, while the sum is 40.

The square root of 1137421777 is about 33725.6842332368. The cubic root of 1137421777 is about 1043.8558104594.

The spelling of 1137421777 in words is "one billion, one hundred thirty-seven million, four hundred twenty-one thousand, seven hundred seventy-seven".