1812107252 has 6 divisors (see below), whose sum is σ = 3171187698. Its totient is φ = 906053624.

The previous prime is 1812107249. The next prime is 1812107261. The reversal of 1812107252 is 2527012181.

It can be written as a sum of positive squares in only one way, i.e., 1811013136 + 1094116 = 42556^2 + 1046^2 .

It is an alternating number because its digits alternate between odd and even.

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, 226513403 + ... + 226513410.

It is an arithmetic number, because the mean of its divisors is an integer number (528531283).

Almost surely, 2^1812107252 is an apocalyptic number.

It is an amenable number.

1812107252 is a deficient number, since it is larger than the sum of its proper divisors (1359080446).

1812107252 is a wasteful number, since it uses less digits than its factorization.

1812107252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453026817 (or 453026815 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 29.

The square root of 1812107252 is about 42568.8530735795. The cubic root of 1812107252 is about 1219.1616680865.

The spelling of 1812107252 in words is "one billion, eight hundred twelve million, one hundred seven thousand, two hundred fifty-two".