4021800334 has 4 divisors (see below), whose sum is σ = 6032700504. Its totient is φ = 2010900166.

The previous prime is 4021800287. The next prime is 4021800337. The reversal of 4021800334 is 4330081204.

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 = 4021800299 and 4021800308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4021800337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1005450082 + ... + 1005450085.

It is an arithmetic number, because the mean of its divisors is an integer number (1508175126).

Almost surely, 2^4021800334 is an apocalyptic number.

4021800334 is a deficient number, since it is larger than the sum of its proper divisors (2010900170).

4021800334 is a wasteful number, since it uses less digits than its factorization.

4021800334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2010900169.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 4021800334 is about 63417.6657880121. The cubic root of 4021800334 is about 1590.2796515091.

Adding to 4021800334 its reverse (4330081204), we get a palindrome (8351881538).

The spelling of 4021800334 in words is "four billion, twenty-one million, eight hundred thousand, three hundred thirty-four".