3845521838 has 4 divisors (see below), whose sum is σ = 5768282760. Its totient is φ = 1922760918.

The previous prime is 3845521817. The next prime is 3845521843. The reversal of 3845521838 is 8381255483.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 3845521792 and 3845521801.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 961380458 + ... + 961380461.

It is an arithmetic number, because the mean of its divisors is an integer number (1442070690).

Almost surely, 2^3845521838 is an apocalyptic number.

3845521838 is a deficient number, since it is larger than the sum of its proper divisors (1922760922).

3845521838 is a wasteful number, since it uses less digits than its factorization.

3845521838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1922760921.

The product of its digits is 921600, while the sum is 47.

The square root of 3845521838 is about 62012.2716726294. The cubic root of 3845521838 is about 1566.6972964486.

The spelling of 3845521838 in words is "three billion, eight hundred forty-five million, five hundred twenty-one thousand, eight hundred thirty-eight".