1663254036 has 36 divisors (see below), whose sum is σ = 4339963264. Its totient is φ = 536533200.

The previous prime is 1663254031. The next prime is 1663254037. The reversal of 1663254036 is 6304523661.

1663254036 is a `hidden beast` number, since 16 + 632 + 5 + 4 + 0 + 3 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1663254031) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 744070 + ... + 746301.

Almost surely, 2^1663254036 is an apocalyptic number.

It is an amenable number.

1663254036 is an abundant number, since it is smaller than the sum of its proper divisors (2676709228).

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

1663254036 is a wasteful number, since it uses less digits than its factorization.

1663254036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1490412 (or 1490407 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 36.

The square root of 1663254036 is about 40783.0116102281. The cubic root of 1663254036 is about 1184.8213243396.

Adding to 1663254036 its reverse (6304523661), we get a palindrome (7967777697).

The spelling of 1663254036 in words is "one billion, six hundred sixty-three million, two hundred fifty-four thousand, thirty-six".