1809340137 has 24 divisors (see below), whose sum is σ = 2855873280. Its totient is φ = 1094726880.

The previous prime is 1809340123. The next prime is 1809340139. The reversal of 1809340137 is 7310439081.

It is a happy number.

1809340137 is a `hidden beast` number, since 180 + 9 + 340 + 137 = 666.

It is not a de Polignac number, because 1809340137 - 2¹⁰ = 1809339113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1809340139) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 45039 + ... + 75147.

It is an arithmetic number, because the mean of its divisors is an integer number (118994720).

Almost surely, 2^1809340137 is an apocalyptic number.

It is an amenable number.

1809340137 is a deficient number, since it is larger than the sum of its proper divisors (1046533143).

1809340137 is a wasteful number, since it uses less digits than its factorization.

1809340137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30733 (or 30730 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 1809340137 is about 42536.3390173626. The cubic root of 1809340137 is about 1218.5407925555.

The spelling of 1809340137 in words is "one billion, eight hundred nine million, three hundred forty thousand, one hundred thirty-seven".