1663915160 has 32 divisors (see below), whose sum is σ = 3844996560. Its totient is φ = 647577216.

The previous prime is 1663915159. The next prime is 1663915189. The reversal of 1663915160 is 615193661.

It is a happy number.

It is a super-2 number, since 2×1663915160² = 5537227319355651200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 560654 + ... + 563613.

Almost surely, 2^1663915160 is an apocalyptic number.

1663915160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1663915160 is an abundant number, since it is smaller than the sum of its proper divisors (2181081400).

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

1663915160 is a wasteful number, since it uses less digits than its factorization.

1663915160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1124315 (or 1124311 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 38.

The square root of 1663915160 is about 40791.1161896803. The cubic root of 1663915160 is about 1184.9782877445.

The spelling of 1663915160 in words is "one billion, six hundred sixty-three million, nine hundred fifteen thousand, one hundred sixty".