1618232212 has 24 divisors (see below), whose sum is σ = 2845815336. Its totient is φ = 805152768.

The previous prime is 1618232191. The next prime is 1618232221. The reversal of 1618232212 is 2122328161.

It can be written as a sum of positive squares in 4 ways, for example, as 78925456 + 1539306756 = 8884^2 + 39234^2 .

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, 1041228 + ... + 1042780.

It is an arithmetic number, because the mean of its divisors is an integer number (118575639).

Almost surely, 2^1618232212 is an apocalyptic number.

It is an amenable number.

1618232212 is a deficient number, since it is larger than the sum of its proper divisors (1227583124).

1618232212 is a wasteful number, since it uses less digits than its factorization.

1618232212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2667 (or 2665 counting only the distinct ones).

The product of its digits is 2304, while the sum is 28.

The square root of 1618232212 is about 40227.2570777576. The cubic root of 1618232212 is about 1174.0329358753.

The spelling of 1618232212 in words is "one billion, six hundred eighteen million, two hundred thirty-two thousand, two hundred twelve".