1097585213949 has 24 divisors (see below), whose sum is σ = 1811923355840. Its totient is φ = 627178863168.

The previous prime is 1097585213909. The next prime is 1097585213999. The reversal of 1097585213949 is 9493125857901.

1097585213949 is a `hidden beast` number, since 1 + 0 + 9 + 7 + 585 + 2 + 1 + 3 + 9 + 49 = 666.

It is not a de Polignac number, because 1097585213949 - 2⁸ = 1097585213693 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1097585213909) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3599937 + ... + 3892905.

Almost surely, 2^{1097585213949} is an apocalyptic number.

It is an amenable number.

1097585213949 is a deficient number, since it is larger than the sum of its proper divisors (714338141891).

1097585213949 is a wasteful number, since it uses less digits than its factorization.

1097585213949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352449 (or 352446 counting only the distinct ones).

The product of its (nonzero) digits is 24494400, while the sum is 63.

The spelling of 1097585213949 in words is "one trillion, ninety-seven billion, five hundred eighty-five million, two hundred thirteen thousand, nine hundred forty-nine".