1868450 has 12 divisors (see below), whose sum is σ = 3475410. Its totient is φ = 747360.

The previous prime is 1868443. The next prime is 1868459. The reversal of 1868450 is 548681.

It can be written as a sum of positive squares in 3 ways, for example, as 1615441 + 253009 = 1271^2 + 503^2 .

It is a super-2 number, since 2×1868450² = 6982210805000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1868459) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18635 + ... + 18734.

2^1868450 is an apocalyptic number.

1868450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1868450 is a deficient number, since it is larger than the sum of its proper divisors (1606960).

1868450 is a wasteful number, since it uses less digits than its factorization.

1868450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37381 (or 37376 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 32.

The square root of 1868450 is about 1366.9125795017. The cubic root of 1868450 is about 123.1668478432.

It can be divided in two parts, 18 and 68450, that multiplied together give a square (1232100 = 1110²).

The spelling of 1868450 in words is "one million, eight hundred sixty-eight thousand, four hundred fifty".