1156497409 has 16 divisors (see below), whose sum is σ = 1228219200. Its totient is φ = 1087261504.

The previous prime is 1156497383. The next prime is 1156497413. The reversal of 1156497409 is 9047946511.

It is not a de Polignac number, because 1156497409 - 2⁷ = 1156497281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1156497449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 179919 + ... + 186235.

It is an arithmetic number, because the mean of its divisors is an integer number (76763700).

Almost surely, 2^1156497409 is an apocalyptic number.

It is an amenable number.

1156497409 is a deficient number, since it is larger than the sum of its proper divisors (71721791).

1156497409 is a wasteful number, since it uses less digits than its factorization.

1156497409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6512.

The product of its (nonzero) digits is 272160, while the sum is 46.

The square root of 1156497409 is about 34007.3140515390. The cubic root of 1156497409 is about 1049.6589698230.

The spelling of 1156497409 in words is "one billion, one hundred fifty-six million, four hundred ninety-seven thousand, four hundred nine".