1809674847 has 12 divisors (see below), whose sum is σ = 2684623240. Its totient is φ = 1173842928.

The previous prime is 1809674833. The next prime is 1809674869. The reversal of 1809674847 is 7484769081.

It is a happy number.

It is not a de Polignac number, because 1809674847 - 2⁷ = 1809674719 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1809674793 and 1809674802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1809674807) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2716897 + ... + 2717562.

Almost surely, 2^1809674847 is an apocalyptic number.

1809674847 is a deficient number, since it is larger than the sum of its proper divisors (874948393).

1809674847 is a wasteful number, since it uses less digits than its factorization.

1809674847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5434502 (or 5434499 counting only the distinct ones).

The product of its (nonzero) digits is 2709504, while the sum is 54.

The square root of 1809674847 is about 42540.2732360760. The cubic root of 1809674847 is about 1218.6159272475.

The spelling of 1809674847 in words is "one billion, eight hundred nine million, six hundred seventy-four thousand, eight hundred forty-seven".