1663665112 has 16 divisors (see below), whose sum is σ = 3129342840. Its totient is φ = 829173696.

The previous prime is 1663665097. The next prime is 1663665121. The reversal of 1663665112 is 2115663661.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 329698 + ... + 334705.

Almost surely, 2^1663665112 is an apocalyptic number.

It is an amenable number.

1663665112 is a deficient number, since it is larger than the sum of its proper divisors (1465677728).

1663665112 is a wasteful number, since it uses less digits than its factorization.

1663665112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 664722 (or 664718 counting only the distinct ones).

The product of its digits is 38880, while the sum is 37.

The square root of 1663665112 is about 40788.0510934269. The cubic root of 1663665112 is about 1184.9189264859.

It can be divided in two parts, 166 and 3665112, that added together give a triangular number (3665278 = T₂₇₀₇).

The spelling of 1663665112 in words is "one billion, six hundred sixty-three million, six hundred sixty-five thousand, one hundred twelve".