1831196409 has 16 divisors (see below), whose sum is σ = 2855288832. Its totient is φ = 1022062608.

The previous prime is 1831196401. The next prime is 1831196413. The reversal of 1831196409 is 9046911381.

It is not a de Polignac number, because 1831196409 - 2³ = 1831196401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1831196401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1013049 + ... + 1014854.

It is an arithmetic number, because the mean of its divisors is an integer number (178455552).

Almost surely, 2^1831196409 is an apocalyptic number.

It is an amenable number.

1831196409 is a deficient number, since it is larger than the sum of its proper divisors (1024092423).

1831196409 is a wasteful number, since it uses less digits than its factorization.

1831196409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2027956.

The product of its (nonzero) digits is 46656, while the sum is 42.

The square root of 1831196409 is about 42792.4807530482. The cubic root of 1831196409 is about 1223.4277001963.

The spelling of 1831196409 in words is "one billion, eight hundred thirty-one million, one hundred ninety-six thousand, four hundred nine".