1840605136 has 20 divisors (see below), whose sum is σ = 3616402464. Its totient is φ = 907340000.

The previous prime is 1840605131. The next prime is 1840605139. The reversal of 1840605136 is 6315060481.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1840605131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 808990 + ... + 811261.

Almost surely, 2^1840605136 is an apocalyptic number.

1840605136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1840605136 is a deficient number, since it is larger than the sum of its proper divisors (1775797328).

1840605136 is a wasteful number, since it uses less digits than its factorization.

1840605136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1620330 (or 1620324 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 1840605136 is about 42902.2742520720. The cubic root of 1840605136 is about 1225.5194544992.

The spelling of 1840605136 in words is "one billion, eight hundred forty million, six hundred five thousand, one hundred thirty-six".