1812207416 has 8 divisors (see below), whose sum is σ = 3397888920. Its totient is φ = 906103704.

The previous prime is 1812207413. The next prime is 1812207433. The reversal of 1812207416 is 6147022181.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1812207413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113262956 + ... + 113262971.

It is an arithmetic number, because the mean of its divisors is an integer number (424736115).

Almost surely, 2^1812207416 is an apocalyptic number.

It is an amenable number.

1812207416 is a deficient number, since it is larger than the sum of its proper divisors (1585681504).

1812207416 is a wasteful number, since it uses less digits than its factorization.

1812207416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226525933 (or 226525929 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 1812207416 is about 42570.0295513170. The cubic root of 1812207416 is about 1219.1841306751.

Adding to 1812207416 its reverse (6147022181), we get a palindrome (7959229597).

The spelling of 1812207416 in words is "one billion, eight hundred twelve million, two hundred seven thousand, four hundred sixteen".