1665265012 has 12 divisors (see below), whose sum is σ = 2923708480. Its totient is φ = 829919736.

The previous prime is 1665264989. The next prime is 1665265033. The reversal of 1665265012 is 2105625661.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 676812 + ... + 679267.

Almost surely, 2^1665265012 is an apocalyptic number.

It is an amenable number.

1665265012 is a deficient number, since it is larger than the sum of its proper divisors (1258443468).

1665265012 is a wasteful number, since it uses less digits than its factorization.

1665265012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1356390 (or 1356388 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 1665265012 is about 40807.6587419568. The cubic root of 1665265012 is about 1185.2986392065.

The spelling of 1665265012 in words is "one billion, six hundred sixty-five million, two hundred sixty-five thousand, twelve".