1157693461 has 2 divisors, whose sum is σ = 1157693462. Its totient is φ = 1157693460.

The previous prime is 1157693423. The next prime is 1157693479. The reversal of 1157693461 is 1643967511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 635342436 + 522351025 = 25206^2 + 22855^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1157693461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1157693491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 578846730 + 578846731.

It is an arithmetic number, because the mean of its divisors is an integer number (578846731).

Almost surely, 2^1157693461 is an apocalyptic number.

It is an amenable number.

1157693461 is a deficient number, since it is larger than the sum of its proper divisors (1).

1157693461 is an equidigital number, since it uses as much as digits as its factorization.

1157693461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 136080, while the sum is 43.

The square root of 1157693461 is about 34024.8947243044. The cubic root of 1157693461 is about 1050.0206983070.

The spelling of 1157693461 in words is "one billion, one hundred fifty-seven million, six hundred ninety-three thousand, four hundred sixty-one".