1949245 has 4 divisors (see below), whose sum is σ = 2339100. Its totient is φ = 1559392.

The previous prime is 1949201. The next prime is 1949251. The reversal of 1949245 is 5429491.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5429491 = 37 ⋅146743.

It can be written as a sum of positive squares in 2 ways, for example, as 198916 + 1750329 = 446^2 + 1323^2 .

It is a cyclic number.

It is not a de Polignac number, because 1949245 - 2⁷ = 1949117 is a prime.

1949245 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1949245.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 194920 + ... + 194929.

It is an arithmetic number, because the mean of its divisors is an integer number (584775).

2^1949245 is an apocalyptic number.

It is an amenable number.

1949245 is a deficient number, since it is larger than the sum of its proper divisors (389855).

1949245 is an equidigital number, since it uses as much as digits as its factorization.

1949245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389854.

The product of its digits is 12960, while the sum is 34.

The square root of 1949245 is about 1396.1536448400. The cubic root of 1949245 is about 124.9171717947.

The spelling of 1949245 in words is "one million, nine hundred forty-nine thousand, two hundred forty-five".