1097506649 has 2 divisors, whose sum is σ = 1097506650. Its totient is φ = 1097506648.

The previous prime is 1097506639. The next prime is 1097506651. The reversal of 1097506649 is 9466057901.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 650607049 + 446899600 = 25507^2 + 21140^2 .

It is a cyclic number.

It is not a de Polignac number, because 1097506649 - 2²⁰ = 1096458073 is a prime.

Together with 1097506651, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1097506639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 548753324 + 548753325.

It is an arithmetic number, because the mean of its divisors is an integer number (548753325).

Almost surely, 2^1097506649 is an apocalyptic number.

It is an amenable number.

1097506649 is a deficient number, since it is larger than the sum of its proper divisors (1).

1097506649 is an equidigital number, since it uses as much as digits as its factorization.

1097506649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 408240, while the sum is 47.

The square root of 1097506649 is about 33128.6378983501. The cubic root of 1097506649 is about 1031.4995749106.

The spelling of 1097506649 in words is "one billion, ninety-seven million, five hundred six thousand, six hundred forty-nine".