1137438461 has 2 divisors, whose sum is σ = 1137438462. Its totient is φ = 1137438460.

The previous prime is 1137438457. The next prime is 1137438469. The reversal of 1137438461 is 1648347311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 973752025 + 163686436 = 31205^2 + 12794^2 .

It is a cyclic number.

It is not a de Polignac number, because 1137438461 - 2² = 1137438457 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1137438469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 568719230 + 568719231.

It is an arithmetic number, because the mean of its divisors is an integer number (568719231).

Almost surely, 2^1137438461 is an apocalyptic number.

It is an amenable number.

1137438461 is a deficient number, since it is larger than the sum of its proper divisors (1).

1137438461 is an equidigital number, since it uses as much as digits as its factorization.

1137438461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48384, while the sum is 38.

The square root of 1137438461 is about 33725.9315809067. The cubic root of 1137438461 is about 1043.8609142845.

The spelling of 1137438461 in words is "one billion, one hundred thirty-seven million, four hundred thirty-eight thousand, four hundred sixty-one".