1945249 has 4 divisors (see below), whose sum is σ = 1948336. Its totient is φ = 1942164.

The previous prime is 1945243. The next prime is 1945261. The reversal of 1945249 is 9425491.

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.

It is a cyclic number.

It is not a de Polignac number, because 1945249 - 2⁷ = 1945121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1945243) 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, 219 + ... + 1984.

It is an arithmetic number, because the mean of its divisors is an integer number (487084).

2^1945249 is an apocalyptic number.

It is an amenable number.

1945249 is a deficient number, since it is larger than the sum of its proper divisors (3087).

1945249 is an equidigital number, since it uses as much as digits as its factorization.

1945249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3086.

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

The square root of 1945249 is about 1394.7218360662. The cubic root of 1945249 is about 124.8317523100.

The spelling of 1945249 in words is "one million, nine hundred forty-five thousand, two hundred forty-nine".