1663161212 has 6 divisors (see below), whose sum is σ = 2910532128. Its totient is φ = 831580604.

The previous prime is 1663161179. The next prime is 1663161229. The reversal of 1663161212 is 2121613661.

It is a happy number.

It is a super-2 number, since 2×1663161212² = 5532210434202617888, 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 as a sum of consecutive naturals, namely, 207895148 + ... + 207895155.

It is an arithmetic number, because the mean of its divisors is an integer number (485088688).

Almost surely, 2^1663161212 is an apocalyptic number.

It is an amenable number.

1663161212 is a deficient number, since it is larger than the sum of its proper divisors (1247370916).

1663161212 is a wasteful number, since it uses less digits than its factorization.

1663161212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415790307 (or 415790305 counting only the distinct ones).

The product of its digits is 2592, while the sum is 29.

The square root of 1663161212 is about 40781.8735714778. The cubic root of 1663161212 is about 1184.7992828278.

Adding to 1663161212 its reverse (2121613661), we get a palindrome (3784774873).

The spelling of 1663161212 in words is "one billion, six hundred sixty-three million, one hundred sixty-one thousand, two hundred twelve".