1945483565 has 4 divisors (see below), whose sum is σ = 2334580284. Its totient is φ = 1556386848.

The previous prime is 1945483559. The next prime is 1945483577. The reversal of 1945483565 is 5653845491.

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 763361641 + 1182121924 = 27629^2 + 34382^2 .

It is a cyclic number.

It is not a de Polignac number, because 1945483565 - 2¹⁶ = 1945418029 is a prime.

It is a Duffinian 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, 194548352 + ... + 194548361.

It is an arithmetic number, because the mean of its divisors is an integer number (583645071).

Almost surely, 2^1945483565 is an apocalyptic number.

It is an amenable number.

1945483565 is a deficient number, since it is larger than the sum of its proper divisors (389096719).

1945483565 is an equidigital number, since it uses as much as digits as its factorization.

1945483565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389096718.

The product of its digits is 2592000, while the sum is 50.

The square root of 1945483565 is about 44107.6361302666. The cubic root of 1945483565 is about 1248.3676965963.

The spelling of 1945483565 in words is "one billion, nine hundred forty-five million, four hundred eighty-three thousand, five hundred sixty-five".