1945115 has 4 divisors (see below), whose sum is σ = 2334144. Its totient is φ = 1556088.

The previous prime is 1945109. The next prime is 1945121. The reversal of 1945115 is 5115491.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1945109) and next prime (1945121).

It is a cyclic number.

It is not a de Polignac number, because 1945115 - 2⁶ = 1945051 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 194507 + ... + 194516.

It is an arithmetic number, because the mean of its divisors is an integer number (583536).

2^1945115 is an apocalyptic number.

1945115 is a deficient number, since it is larger than the sum of its proper divisors (389029).

1945115 is an equidigital number, since it uses as much as digits as its factorization.

1945115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389028.

The product of its digits is 900, while the sum is 26.

The square root of 1945115 is about 1394.6737969862. The cubic root of 1945115 is about 124.8288858665.

The spelling of 1945115 in words is "one million, nine hundred forty-five thousand, one hundred fifteen".