1851336 has 40 divisors (see below), whose sum is σ = 5187270. Its totient is φ = 616896.

The previous prime is 1851329. The next prime is 1851337. The reversal of 1851336 is 6331581.

It can be written as a sum of positive squares in only one way, i.e., 1454436 + 396900 = 1206^2 + 630^2 .

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 9 ways as a sum of consecutive naturals, for example, 781 + ... + 2076.

2^1851336 is an apocalyptic number.

It is an amenable number.

1851336 is an abundant number, since it is smaller than the sum of its proper divisors (3335934).

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

1851336 is a wasteful number, since it uses less digits than its factorization.

1851336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2875 (or 2862 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 1851336 is about 1360.6380856054. The cubic root of 1851336 is about 122.7896464089.

It can be divided in two parts, 1851 and 336, that added together give a 7-th power (2187 = 3⁷).

The spelling of 1851336 in words is "one million, eight hundred fifty-one thousand, three hundred thirty-six".