4812181972 has 24 divisors (see below), whose sum is σ = 9290314152. Its totient is φ = 2166835200.

The previous prime is 4812181919. The next prime is 4812182017. The reversal of 4812181972 is 2791812184.

It can be written as a sum of positive squares in 4 ways, for example, as 145106116 + 4667075856 = 12046^2 + 68316^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1126429 + ... + 1130692.

It is an arithmetic number, because the mean of its divisors is an integer number (387096423).

Almost surely, 2^4812181972 is an apocalyptic number.

It is an amenable number.

4812181972 is a deficient number, since it is larger than the sum of its proper divisors (4478132180).

4812181972 is a wasteful number, since it uses less digits than its factorization.

4812181972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2257179 (or 2257177 counting only the distinct ones).

The product of its digits is 64512, while the sum is 43.

The square root of 4812181972 is about 69369.8924029726. The cubic root of 4812181972 is about 1688.2911630034.

The spelling of 4812181972 in words is "four billion, eight hundred twelve million, one hundred eighty-one thousand, nine hundred seventy-two".