1945113 has 4 divisors (see below), whose sum is σ = 2593488. Its totient is φ = 1296740.

The previous prime is 1945109. The next prime is 1945121. The reversal of 1945113 is 3115491.

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, and also an emirpimes, since its reverse is a distinct semiprime: 3115491 = 3 ⋅1038497.

It is a cyclic number.

It is not a de Polignac number, because 1945113 - 2² = 1945109 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (1945183) 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, 324183 + ... + 324188.

It is an arithmetic number, because the mean of its divisors is an integer number (648372).

2^1945113 is an apocalyptic number.

It is an amenable number.

1945113 is a deficient number, since it is larger than the sum of its proper divisors (648375).

1945113 is an equidigital number, since it uses as much as digits as its factorization.

1945113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 648374.

The product of its digits is 540, while the sum is 24.

The square root of 1945113 is about 1394.6730799725. The cubic root of 1945113 is about 124.8288430828.

The spelling of 1945113 in words is "one million, nine hundred forty-five thousand, one hundred thirteen".