1909456834 has 8 divisors (see below), whose sum is σ = 2893713228. Its totient is φ = 944885760.

The previous prime is 1909456807. The next prime is 1909456853. The reversal of 1909456834 is 4386549091.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1848570025 + 60886809 = 42995^2 + 7803^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4921087 + ... + 4921474.

Almost surely, 2^1909456834 is an apocalyptic number.

1909456834 is a deficient number, since it is larger than the sum of its proper divisors (984256394).

1909456834 is an equidigital number, since it uses as much as digits as its factorization.

1909456834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9842660.

The product of its (nonzero) digits is 933120, while the sum is 49.

The square root of 1909456834 is about 43697.3321153592. The cubic root of 1909456834 is about 1240.6138207081.

The spelling of 1909456834 in words is "one billion, nine hundred nine million, four hundred fifty-six thousand, eight hundred thirty-four".