1825718238 has 16 divisors (see below), whose sum is σ = 4057151760. Its totient is φ = 608572728.

The previous prime is 1825718231. The next prime is 1825718261. The reversal of 1825718238 is 8328175281.

It is a super-4 number, since 4×1825718238⁴ (a number of 38 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1825718193 and 1825718202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1825718231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16904745 + ... + 16904852.

It is an arithmetic number, because the mean of its divisors is an integer number (253571985).

Almost surely, 2^1825718238 is an apocalyptic number.

1825718238 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1825718238 is an abundant number, since it is smaller than the sum of its proper divisors (2231433522).

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

1825718238 is a wasteful number, since it uses less digits than its factorization.

1825718238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33809608 (or 33809602 counting only the distinct ones).

The product of its digits is 215040, while the sum is 45.

The square root of 1825718238 is about 42728.4242396089. The cubic root of 1825718238 is about 1222.2064875544.

The spelling of 1825718238 in words is "one billion, eight hundred twenty-five million, seven hundred eighteen thousand, two hundred thirty-eight".