1663598418 has 32 divisors (see below), whose sum is σ = 3486333312. Its totient is φ = 528211200.

The previous prime is 1663598383. The next prime is 1663598437. The reversal of 1663598418 is 8148953661.

1663598418 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8248 + ... + 58268.

It is an arithmetic number, because the mean of its divisors is an integer number (108947916).

Almost surely, 2^1663598418 is an apocalyptic number.

1663598418 is an abundant number, since it is smaller than the sum of its proper divisors (1822734894).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1663598418 is a wasteful number, since it uses less digits than its factorization.

1663598418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50290.

The product of its digits is 1244160, while the sum is 51.

The square root of 1663598418 is about 40787.2335173642. The cubic root of 1663598418 is about 1184.9030923619.

The spelling of 1663598418 in words is "one billion, six hundred sixty-three million, five hundred ninety-eight thousand, four hundred eighteen".