1945035445 has 4 divisors (see below), whose sum is σ = 2334042540. Its totient is φ = 1556028352.

The previous prime is 1945035419. The next prime is 1945035461. The reversal of 1945035445 is 5445305491.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1295856004 + 649179441 = 35998^2 + 25479^2 .

It is a cyclic number.

It is not a de Polignac number, because 1945035445 - 2⁷ = 1945035317 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1945035398 and 1945035407.

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, 194503540 + ... + 194503549.

It is an arithmetic number, because the mean of its divisors is an integer number (583510635).

Almost surely, 2^1945035445 is an apocalyptic number.

It is an amenable number.

1945035445 is a deficient number, since it is larger than the sum of its proper divisors (389007095).

1945035445 is an equidigital number, since it uses as much as digits as its factorization.

1945035445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389007094.

The product of its (nonzero) digits is 216000, while the sum is 40.

The square root of 1945035445 is about 44102.5559916883. Note that the first 3 decimals coincide. The cubic root of 1945035445 is about 1248.2718401385.

The spelling of 1945035445 in words is "one billion, nine hundred forty-five million, thirty-five thousand, four hundred forty-five".