1097748309 has 32 divisors (see below), whose sum is σ = 1750081536. Its totient is φ = 598942080.

The previous prime is 1097748307. The next prime is 1097748317. The reversal of 1097748309 is 9038477901.

It is not a de Polignac number, because 1097748309 - 2¹ = 1097748307 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1097748307) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26904 + ... + 54030.

It is an arithmetic number, because the mean of its divisors is an integer number (54690048).

Almost surely, 2^1097748309 is an apocalyptic number.

It is an amenable number.

1097748309 is a deficient number, since it is larger than the sum of its proper divisors (652333227).

1097748309 is a wasteful number, since it uses less digits than its factorization.

1097748309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27225.

The product of its (nonzero) digits is 381024, while the sum is 48.

The square root of 1097748309 is about 33132.2849951524. The cubic root of 1097748309 is about 1031.5752779884.

The spelling of 1097748309 in words is "one billion, ninety-seven million, seven hundred forty-eight thousand, three hundred nine".