1851622132 has 12 divisors (see below), whose sum is σ = 3240663300. Its totient is φ = 925718336.

The previous prime is 1851622111. The next prime is 1851622163. The reversal of 1851622132 is 2312261581.

It can be written as a sum of positive squares in 2 ways, for example, as 1606887396 + 244734736 = 40086^2 + 15644^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1851622094 and 1851622103.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42288 + ... + 74104.

It is an arithmetic number, because the mean of its divisors is an integer number (270055275).

Almost surely, 2^1851622132 is an apocalyptic number.

It is an amenable number.

1851622132 is a deficient number, since it is larger than the sum of its proper divisors (1389041168).

1851622132 is a wasteful number, since it uses less digits than its factorization.

1851622132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46370 (or 46368 counting only the distinct ones).

The product of its digits is 5760, while the sum is 31.

The square root of 1851622132 is about 43030.4791049321. The cubic root of 1851622132 is about 1227.9597197368.

The spelling of 1851622132 in words is "one billion, eight hundred fifty-one million, six hundred twenty-two thousand, one hundred thirty-two".