1157090449 has 2 divisors, whose sum is σ = 1157090450. Its totient is φ = 1157090448.

The previous prime is 1157090447. The next prime is 1157090489. The reversal of 1157090449 is 9440907511.

It is an a-pointer prime, because the next prime (1157090489) can be obtained adding 1157090449 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 936360000 + 220730449 = 30600^2 + 14857^2 .

It is a cyclic number.

It is not a de Polignac number, because 1157090449 - 2¹ = 1157090447 is a prime.

Together with 1157090447, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1157090447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 578545224 + 578545225.

It is an arithmetic number, because the mean of its divisors is an integer number (578545225).

Almost surely, 2^1157090449 is an apocalyptic number.

It is an amenable number.

1157090449 is a deficient number, since it is larger than the sum of its proper divisors (1).

1157090449 is an equidigital number, since it uses as much as digits as its factorization.

1157090449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45360, while the sum is 40.

The square root of 1157090449 is about 34016.0322348154. The cubic root of 1157090449 is about 1049.8383572789.

The spelling of 1157090449 in words is "one billion, one hundred fifty-seven million, ninety thousand, four hundred forty-nine".