1945135 has 4 divisors (see below), whose sum is σ = 2334168. Its totient is φ = 1556104.

The previous prime is 1945129. The next prime is 1945169. The reversal of 1945135 is 5315491.

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

It is a cyclic number.

It is not a de Polignac number, because 1945135 - 2⁷ = 1945007 is a prime.

It is a Duffinian number.

1945135 is a lucky number.

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, 194509 + ... + 194518.

It is an arithmetic number, because the mean of its divisors is an integer number (583542).

2^1945135 is an apocalyptic number.

1945135 is a deficient number, since it is larger than the sum of its proper divisors (389033).

1945135 is an equidigital number, since it uses as much as digits as its factorization.

1945135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389032.

The product of its digits is 2700, while the sum is 28.

The square root of 1945135 is about 1394.6809671032. The cubic root of 1945135 is about 124.8293137023.

It can be divided in two parts, 1945 and 135, that added together give a triangular number (2080 = T₆₄).

The spelling of 1945135 in words is "one million, nine hundred forty-five thousand, one hundred thirty-five".