1868969 has 4 divisors (see below), whose sum is σ = 1886544. Its totient is φ = 1851396.

The previous prime is 1868947. The next prime is 1868983. The reversal of 1868969 is 9698681.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9698681 = 953 ⋅10177.

It is a cyclic number.

It is not a de Polignac number, because 1868969 - 2¹² = 1864873 is a prime.

It is a super-2 number, since 2×1868969² = 6986090245922, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1868989) 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, 8627 + ... + 8840.

It is an arithmetic number, because the mean of its divisors is an integer number (471636).

2^1868969 is an apocalyptic number.

It is an amenable number.

1868969 is a deficient number, since it is larger than the sum of its proper divisors (17575).

1868969 is a wasteful number, since it uses less digits than its factorization.

1868969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17574.

The product of its digits is 186624, while the sum is 47.

The square root of 1868969 is about 1367.1024102093. The cubic root of 1868969 is about 123.1782508200.

The spelling of 1868969 in words is "one million, eight hundred sixty-eight thousand, nine hundred sixty-nine".