1665836012 has 12 divisors (see below), whose sum is σ = 2918520696. Its totient is φ = 831972960.

The previous prime is 1665835921. The next prime is 1665836017. The reversal of 1665836012 is 2106385661.

It is not an unprimeable number, because it can be changed into a prime (1665836017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 232289 + ... + 239352.

It is an arithmetic number, because the mean of its divisors is an integer number (243210058).

Almost surely, 2^1665836012 is an apocalyptic number.

It is an amenable number.

1665836012 is a deficient number, since it is larger than the sum of its proper divisors (1252684684).

1665836012 is a wasteful number, since it uses less digits than its factorization.

1665836012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 472528 (or 472526 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 1665836012 is about 40814.6543780540. The cubic root of 1665836012 is about 1185.4340987633.

The spelling of 1665836012 in words is "one billion, six hundred sixty-five million, eight hundred thirty-six thousand, twelve".