1097206538 has 8 divisors (see below), whose sum is σ = 1646241732. Its totient is φ = 548459296.

The previous prime is 1097206499. The next prime is 1097206549. The reversal of 1097206538 is 8356027901.

It can be written as a sum of positive squares in 2 ways, for example, as 1086559369 + 10647169 = 32963^2 + 3263^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1097206495 and 1097206504.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62195 + ... + 77862.

Almost surely, 2^1097206538 is an apocalyptic number.

1097206538 is a deficient number, since it is larger than the sum of its proper divisors (549035194).

1097206538 is a wasteful number, since it uses less digits than its factorization.

1097206538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143976.

The product of its (nonzero) digits is 90720, while the sum is 41.

The square root of 1097206538 is about 33124.1081087476. The cubic root of 1097206538 is about 1031.4055458402.

The spelling of 1097206538 in words is "one billion, ninety-seven million, two hundred six thousand, five hundred thirty-eight".