1945575493 has 4 divisors (see below), whose sum is σ = 1945826368. Its totient is φ = 1945324620.

The previous prime is 1945575431. The next prime is 1945575529. The reversal of 1945575493 is 3945755491.

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.

It is a cyclic number.

It is not a de Polignac number, because 1945575493 - 2¹⁷ = 1945444421 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1945575493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1945575193) 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, 113421 + ... + 129442.

It is an arithmetic number, because the mean of its divisors is an integer number (486456592).

Almost surely, 2^1945575493 is an apocalyptic number.

It is an amenable number.

1945575493 is a deficient number, since it is larger than the sum of its proper divisors (250875).

1945575493 is an equidigital number, since it uses as much as digits as its factorization.

1945575493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250874.

The product of its digits is 3402000, while the sum is 52.

The square root of 1945575493 is about 44108.6782050879. The cubic root of 1945575493 is about 1248.3873589123.

The spelling of 1945575493 in words is "one billion, nine hundred forty-five million, five hundred seventy-five thousand, four hundred ninety-three".