1809034428 has 12 divisors (see below), whose sum is σ = 4221080360. Its totient is φ = 603011472.

The previous prime is 1809034427. The next prime is 1809034429. The reversal of 1809034428 is 8244309081.

It is an interprime number because it is at equal distance from previous prime (1809034427) and next prime (1809034429).

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1809034421) 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 3 ways as a sum of consecutive naturals, for example, 75376423 + ... + 75376446.

Almost surely, 2^1809034428 is an apocalyptic number.

It is an amenable number.

1809034428 is an abundant number, since it is smaller than the sum of its proper divisors (2412045932).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1809034428 is a wasteful number, since it uses less digits than its factorization.

1809034428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150752876 (or 150752874 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 39.

The square root of 1809034428 is about 42532.7453616622. The cubic root of 1809034428 is about 1218.4721598236.

The spelling of 1809034428 in words is "one billion, eight hundred nine million, thirty-four thousand, four hundred twenty-eight".