1816472072 has 32 divisors (see below), whose sum is σ = 3558259800. Its totient is φ = 868224000.

The previous prime is 1816472071. The next prime is 1816472107. The reversal of 1816472072 is 2702746181.

It can be written as a sum of positive squares in 4 ways, for example, as 1631675236 + 184796836 = 40394^2 + 13594^2 .

It is not an unprimeable number, because it can be changed into a prime (1816472071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15329 + ... + 62192.

Almost surely, 2^1816472072 is an apocalyptic number.

It is an amenable number.

1816472072 is a deficient number, since it is larger than the sum of its proper divisors (1741787728).

1816472072 is a wasteful number, since it uses less digits than its factorization.

1816472072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77657 (or 77653 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 38.

The square root of 1816472072 is about 42620.0900045976. The cubic root of 1816472072 is about 1220.1397474961.

The spelling of 1816472072 in words is "one billion, eight hundred sixteen million, four hundred seventy-two thousand, seventy-two".