1901206 has 8 divisors (see below), whose sum is σ = 2858184. Its totient is φ = 948480.

The previous prime is 1901201. The next prime is 1901209. The reversal of 1901206 is 6021091.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1901206² = 7229168508872, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1901201) 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, 541 + ... + 2023.

It is an arithmetic number, because the mean of its divisors is an integer number (357273).

2^1901206 is an apocalyptic number.

1901206 is a deficient number, since it is larger than the sum of its proper divisors (956978).

1901206 is a wasteful number, since it uses less digits than its factorization.

1901206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2126.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 1901206 is about 1378.8422679915. The cubic root of 1901206 is about 123.8824327919.

Adding to 1901206 its reverse (6021091), we get a palindrome (7922297).

Subtracting 1901206 from its reverse (6021091), we obtain a triangular number (4119885 = T₂₈₇₀).

The spelling of 1901206 in words is "one million, nine hundred one thousand, two hundred six".