1890833238 has 48 divisors (see below), whose sum is σ = 4790962176. Its totient is φ = 527672880.

The previous prime is 1890833233. The next prime is 1890833267. The reversal of 1890833238 is 8323380981.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1890833193 and 1890833202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1890833233) 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 23 ways as a sum of consecutive naturals, for example, 169078 + ... + 179913.

It is an arithmetic number, because the mean of its divisors is an integer number (99811712).

Almost surely, 2^1890833238 is an apocalyptic number.

1890833238 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1890833238 is an abundant number, since it is smaller than the sum of its proper divisors (2900128938).

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

1890833238 is a wasteful number, since it uses less digits than its factorization.

1890833238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349049 (or 349046 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 1890833238 is about 43483.7123300208. The cubic root of 1890833238 is about 1236.5672569795.

The spelling of 1890833238 in words is "one billion, eight hundred ninety million, eight hundred thirty-three thousand, two hundred thirty-eight".