1097729387 has 2 divisors, whose sum is σ = 1097729388. Its totient is φ = 1097729386.

The previous prime is 1097729377. The next prime is 1097729417. The reversal of 1097729387 is 7839277901.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1097729387 - 2⁶ = 1097729323 is a prime.

It is not a weakly prime, because it can be changed into another prime (1097729317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 548864693 + 548864694.

It is an arithmetic number, because the mean of its divisors is an integer number (548864694).

Almost surely, 2^1097729387 is an apocalyptic number.

1097729387 is a deficient number, since it is larger than the sum of its proper divisors (1).

1097729387 is an equidigital number, since it uses as much as digits as its factorization.

1097729387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1333584, while the sum is 53.

The square root of 1097729387 is about 33131.9994416274. Note that the first 3 decimals coincide. The cubic root of 1097729387 is about 1031.5693508314.

The spelling of 1097729387 in words is "one billion, ninety-seven million, seven hundred twenty-nine thousand, three hundred eighty-seven".