1906868 has 12 divisors (see below), whose sum is σ = 3351012. Its totient is φ = 949440.

The previous prime is 1906867. The next prime is 1906871. The reversal of 1906868 is 8686091.

It can be written as a sum of positive squares in 2 ways, for example, as 850084 + 1056784 = 922^2 + 1028^2 .

It is a super-2 number, since 2×1906868² = 7272291138848, which contains 22 as substring.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1906867) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 248 + ... + 1968.

It is an arithmetic number, because the mean of its divisors is an integer number (279251).

2^1906868 is an apocalyptic number.

It is an amenable number.

1906868 is a deficient number, since it is larger than the sum of its proper divisors (1444144).

1906868 is a wasteful number, since it uses less digits than its factorization.

1906868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2002 (or 2000 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 1906868 is about 1380.8939133764. The cubic root of 1906868 is about 124.0052894032.

It can be divided in two parts, 190 and 6868, that multiplied together give a triangular number (1304920 = T₁₆₁₅).

The spelling of 1906868 in words is "one million, nine hundred six thousand, eight hundred sixty-eight".