1851332 has 24 divisors (see below), whose sum is σ = 3804864. Its totient is φ = 771552.

The previous prime is 1851329. The next prime is 1851337. The reversal of 1851332 is 2331581.

It is a junction number, because it is equal to n+sod(n) for n = 1851298 and 1851307.

It is not an unprimeable number, because it can be changed into a prime (1851337) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 143 + ... + 1929.

It is an arithmetic number, because the mean of its divisors is an integer number (158536).

2^1851332 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1851332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1902432).

1851332 is an abundant number, since it is smaller than the sum of its proper divisors (1953532).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1851332 is a wasteful number, since it uses less digits than its factorization.

1851332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1835 (or 1833 counting only the distinct ones).

The product of its digits is 720, while the sum is 23.

The square root of 1851332 is about 1360.6366157060. The cubic root of 1851332 is about 122.7895579757.

Subtracting 1851332 from its reverse (2331581), we obtain a square (480249 = 693²).

It can be divided in two parts, 18513 and 32, that multiplied together give a triangular number (592416 = T₁₀₈₈).

The spelling of 1851332 in words is "one million, eight hundred fifty-one thousand, three hundred thirty-two".