1097981215 has 8 divisors (see below), whose sum is σ = 1386923760. Its totient is φ = 832154112.

The previous prime is 1097981197. The next prime is 1097981233. The reversal of 1097981215 is 5121897901.

It is an interprime number because it is at equal distance from previous prime (1097981197) and next prime (1097981233).

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

It is a cyclic number.

It is not a de Polignac number, because 1097981215 - 2²¹ = 1095884063 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5778754 + ... + 5778943.

It is an arithmetic number, because the mean of its divisors is an integer number (173365470).

Almost surely, 2^1097981215 is an apocalyptic number.

1097981215 is a deficient number, since it is larger than the sum of its proper divisors (288942545).

1097981215 is a wasteful number, since it uses less digits than its factorization.

1097981215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11557721.

The product of its (nonzero) digits is 45360, while the sum is 43.

The square root of 1097981215 is about 33135.7995980179. The cubic root of 1097981215 is about 1031.6482282509.

The spelling of 1097981215 in words is "one billion, ninety-seven million, nine hundred eighty-one thousand, two hundred fifteen".