1906458 has 8 divisors (see below), whose sum is σ = 3812928. Its totient is φ = 635484.

The previous prime is 1906453. The next prime is 1906477. The reversal of 1906458 is 8546091.

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

1906458 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (1906453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 158866 + ... + 158877.

It is an arithmetic number, because the mean of its divisors is an integer number (476616).

2^1906458 is an apocalyptic number.

1906458 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1906458 is a wasteful number, since it uses less digits than its factorization.

1906458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317748.

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 1906458 is about 1380.7454508344. The cubic root of 1906458 is about 123.9964012136.

It can be divided in two parts, 190645 and 8, that added together give a triangular number (190653 = T₆₁₇).

The spelling of 1906458 in words is "one million, nine hundred six thousand, four hundred fifty-eight".