1197928749 has 16 divisors (see below), whose sum is σ = 1692878400. Its totient is φ = 750892800.

The previous prime is 1197928747. The next prime is 1197928763. The reversal of 1197928749 is 9478297911.

It is not a de Polignac number, because 1197928749 - 2¹ = 1197928747 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1197928747) 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 15 ways as a sum of consecutive naturals, for example, 42427 + ... + 64775.

It is an arithmetic number, because the mean of its divisors is an integer number (105804900).

Almost surely, 2^1197928749 is an apocalyptic number.

It is an amenable number.

1197928749 is a deficient number, since it is larger than the sum of its proper divisors (494949651).

1197928749 is a wasteful number, since it uses less digits than its factorization.

1197928749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23420.

The product of its digits is 2286144, while the sum is 57.

The square root of 1197928749 is about 34611.1073067592. The cubic root of 1197928749 is about 1062.0468191275.

The spelling of 1197928749 in words is "one billion, one hundred ninety-seven million, nine hundred twenty-eight thousand, seven hundred forty-nine".