1838248240 has 40 divisors (see below), whose sum is σ = 4275717408. Its totient is φ = 734991360.

The previous prime is 1838248229. The next prime is 1838248253. The reversal of 1838248240 is 428428381.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 1838248193 and 1838248202.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 348664 + ... + 353896.

Almost surely, 2^1838248240 is an apocalyptic number.

1838248240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1838248240 is an abundant number, since it is smaller than the sum of its proper divisors (2437469168).

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

1838248240 is a wasteful number, since it uses less digits than its factorization.

1838248240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9637 (or 9631 counting only the distinct ones).

The product of its (nonzero) digits is 98304, while the sum is 40.

The square root of 1838248240 is about 42874.7972589959. The cubic root of 1838248240 is about 1224.9961382635.

The spelling of 1838248240 in words is "one billion, eight hundred thirty-eight million, two hundred forty-eight thousand, two hundred forty".