1156104397 has 16 divisors (see below), whose sum is σ = 1401926400. Its totient is φ = 930693888.

The previous prime is 1156104379. The next prime is 1156104403. The reversal of 1156104397 is 7934016511.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1156104397 - 2¹¹ = 1156102349 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1156104337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47979 + ... + 67927.

It is an arithmetic number, because the mean of its divisors is an integer number (87620400).

Almost surely, 2^1156104397 is an apocalyptic number.

1156104397 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1156104397 is a deficient number, since it is larger than the sum of its proper divisors (245822003).

1156104397 is a wasteful number, since it uses less digits than its factorization.

1156104397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20460.

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 1156104397 is about 34001.5352153399. The cubic root of 1156104397 is about 1049.5400546381.

The spelling of 1156104397 in words is "one billion, one hundred fifty-six million, one hundred four thousand, three hundred ninety-seven".