1821348706 has 8 divisors (see below), whose sum is σ = 2732219100. Its totient is φ = 910609008.

The previous prime is 1821348629. The next prime is 1821348707. The reversal of 1821348706 is 6078431281.

It can be written as a sum of positive squares in 2 ways, for example, as 1710236025 + 111112681 = 41355^2 + 10541^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1821348706² = 6634622217695748872, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1821348707) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17700 + ... + 62896.

Almost surely, 2^1821348706 is an apocalyptic number.

1821348706 is a deficient number, since it is larger than the sum of its proper divisors (910870394).

1821348706 is a wasteful number, since it uses less digits than its factorization.

1821348706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65348.

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 1821348706 is about 42677.2621661699. The cubic root of 1821348706 is about 1221.2306640110.

Adding to 1821348706 its reverse (6078431281), we get a palindrome (7899779987).

The spelling of 1821348706 in words is "one billion, eight hundred twenty-one million, three hundred forty-eight thousand, seven hundred six".