1663575374 has 4 divisors (see below), whose sum is σ = 2495363064. Its totient is φ = 831787686.

The previous prime is 1663575373. The next prime is 1663575377. The reversal of 1663575374 is 4735753661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4735753661 = 12637 ⋅374753.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1663575371) by changing a digit.

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 as a sum of consecutive naturals, namely, 415893842 + ... + 415893845.

It is an arithmetic number, because the mean of its divisors is an integer number (623840766).

Almost surely, 2^1663575374 is an apocalyptic number.

1663575374 is a deficient number, since it is larger than the sum of its proper divisors (831787690).

1663575374 is an equidigital number, since it uses as much as digits as its factorization.

1663575374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 831787689.

The product of its digits is 1587600, while the sum is 47.

The square root of 1663575374 is about 40786.9510260328. The cubic root of 1663575374 is about 1184.8976212833.

The spelling of 1663575374 in words is "one billion, six hundred sixty-three million, five hundred seventy-five thousand, three hundred seventy-four".