1838652240 has 80 divisors (see below), whose sum is σ = 5793307776. Its totient is φ = 482265600.

The previous prime is 1838652239. The next prime is 1838652247. The reversal of 1838652240 is 422568381.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1838652247) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 48156 + ... + 77435.

Almost surely, 2^1838652240 is an apocalyptic number.

1838652240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1838652240 is an abundant number, since it is smaller than the sum of its proper divisors (3954655536).

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

1838652240 is a wasteful number, since it uses less digits than its factorization.

1838652240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125668 (or 125662 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 39.

The square root of 1838652240 is about 42879.5083927043. The cubic root of 1838652240 is about 1225.0858726418.

The spelling of 1838652240 in words is "one billion, eight hundred thirty-eight million, six hundred fifty-two thousand, two hundred forty".