1612861212 has 48 divisors (see below), whose sum is σ = 3861914112. Its totient is φ = 523649280.

The previous prime is 1612861171. The next prime is 1612861219. The reversal of 1612861212 is 2121682161.

It is a self number, because there is not a number n which added to its sum of digits gives 1612861212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1612861219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112228 + ... + 125780.

It is an arithmetic number, because the mean of its divisors is an integer number (80456544).

Almost surely, 2^1612861212 is an apocalyptic number.

1612861212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1612861212 is an abundant number, since it is smaller than the sum of its proper divisors (2249052900).

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

1612861212 is a wasteful number, since it uses less digits than its factorization.

1612861212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13818 (or 13816 counting only the distinct ones).

The product of its digits is 2304, while the sum is 30.

The square root of 1612861212 is about 40160.4433740466. The cubic root of 1612861212 is about 1172.7326033071.

The spelling of 1612861212 in words is "one billion, six hundred twelve million, eight hundred sixty-one thousand, two hundred twelve".