1853440230 has 32 divisors (see below), whose sum is σ = 4470624000. Its totient is φ = 491765472.

The previous prime is 1853440217. The next prime is 1853440231. The reversal of 1853440230 is 320443581.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1853440231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 149260 + ... + 161199.

It is an arithmetic number, because the mean of its divisors is an integer number (139707000).

Almost surely, 2^1853440230 is an apocalyptic number.

1853440230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1853440230 is an abundant number, since it is smaller than the sum of its proper divisors (2617183770).

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

1853440230 is a wasteful number, since it uses less digits than its factorization.

1853440230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310668.

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 1853440230 is about 43051.5996218491. The cubic root of 1853440230 is about 1228.3614973206.

The spelling of 1853440230 in words is "one billion, eight hundred fifty-three million, four hundred forty thousand, two hundred thirty".