1845414640 has 20 divisors (see below), whose sum is σ = 4290589224. Its totient is φ = 738165824.

The previous prime is 1845414631. The next prime is 1845414643. The reversal of 1845414640 is 464145481.

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 1845414640.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1845414643) 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, 11533762 + ... + 11533921.

Almost surely, 2^1845414640 is an apocalyptic number.

1845414640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1845414640 is an abundant number, since it is smaller than the sum of its proper divisors (2445174584).

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

1845414640 is a wasteful number, since it uses less digits than its factorization.

1845414640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23067696 (or 23067690 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 37.

The square root of 1845414640 is about 42958.2895376434. The cubic root of 1845414640 is about 1226.5859541779.

The spelling of 1845414640 in words is "one billion, eight hundred forty-five million, four hundred fourteen thousand, six hundred forty".