1563799474 has 4 divisors (see below), whose sum is σ = 2345699214. Its totient is φ = 781899736.

The previous prime is 1563799453. The next prime is 1563799481. The reversal of 1563799474 is 4749973651.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4749973651 = 2927 ⋅1622813.

It can be written as a sum of positive squares in only one way, i.e., 1185769225 + 378030249 = 34435^2 + 19443^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 390949867 + ... + 390949870.

Almost surely, 2^1563799474 is an apocalyptic number.

1563799474 is a deficient number, since it is larger than the sum of its proper divisors (781899740).

1563799474 is an equidigital number, since it uses as much as digits as its factorization.

1563799474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 781899739.

The product of its digits is 5715360, while the sum is 55.

The square root of 1563799474 is about 39544.9045263736. The cubic root of 1563799474 is about 1160.7188058798.

The spelling of 1563799474 in words is "one billion, five hundred sixty-three million, seven hundred ninety-nine thousand, four hundred seventy-four".