1790138 has 8 divisors (see below), whose sum is σ = 3068832. Its totient is φ = 767196.

The previous prime is 1790137. The next prime is 1790149. The reversal of 1790138 is 8310971.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1790138.

It is not an unprimeable number, because it can be changed into a prime (1790137) 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, 63920 + ... + 63947.

It is an arithmetic number, because the mean of its divisors is an integer number (383604).

2^1790138 is an apocalyptic number.

1790138 is a deficient number, since it is larger than the sum of its proper divisors (1278694).

1790138 is a wasteful number, since it uses less digits than its factorization.

1790138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127876.

The product of its (nonzero) digits is 1512, while the sum is 29.

The square root of 1790138 is about 1337.9603880534. The cubic root of 1790138 is about 121.4214748860.

The spelling of 1790138 in words is "one million, seven hundred ninety thousand, one hundred thirty-eight".