1809077434 has 8 divisors (see below), whose sum is σ = 2713797108. Its totient is φ = 904478400.

The previous prime is 1809077429. The next prime is 1809077441. The reversal of 1809077434 is 4347709081.

It can be written as a sum of positive squares in 2 ways, for example, as 1118701809 + 690375625 = 33447^2 + 26275^2 .

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

It is a super-2 number, since 2×1809077434² = 6545522324416048712, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39634 + ... + 72034.

Almost surely, 2^1809077434 is an apocalyptic number.

1809077434 is a deficient number, since it is larger than the sum of its proper divisors (904719674).

1809077434 is a wasteful number, since it uses less digits than its factorization.

1809077434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60320.

The product of its (nonzero) digits is 169344, while the sum is 43.

The square root of 1809077434 is about 42533.2509220727. The cubic root of 1809077434 is about 1218.4818152873.

The spelling of 1809077434 in words is "one billion, eight hundred nine million, seventy-seven thousand, four hundred thirty-four".