1097366491 has 8 divisors (see below), whose sum is σ = 1182852944. Its totient is φ = 1012033440.

The previous prime is 1097366471. The next prime is 1097366503. The reversal of 1097366491 is 1946637901.

It is a happy number.

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 1097366491 - 2¹⁵ = 1097333723 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1097366411) by changing a digit.

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, 23265 + ... + 52306.

It is an arithmetic number, because the mean of its divisors is an integer number (147856618).

Almost surely, 2^1097366491 is an apocalyptic number.

1097366491 is a deficient number, since it is larger than the sum of its proper divisors (85486453).

1097366491 is a wasteful number, since it uses less digits than its factorization.

1097366491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76701.

The product of its (nonzero) digits is 244944, while the sum is 46.

The square root of 1097366491 is about 33126.5224706730. The cubic root of 1097366491 is about 1031.4556635374.

The spelling of 1097366491 in words is "one billion, ninety-seven million, three hundred sixty-six thousand, four hundred ninety-one".