1669151612 has 12 divisors (see below), whose sum is σ = 2921309496. Its totient is φ = 834491760.

The previous prime is 1669151611. The next prime is 1669151621. The reversal of 1669151612 is 2161519661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1669151611) 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, 51398 + ... + 77330.

It is an arithmetic number, because the mean of its divisors is an integer number (243442458).

Almost surely, 2^1669151612 is an apocalyptic number.

It is an amenable number.

1669151612 is a deficient number, since it is larger than the sum of its proper divisors (1252157884).

1669151612 is a wasteful number, since it uses less digits than its factorization.

1669151612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42028 (or 42026 counting only the distinct ones).

The product of its digits is 19440, while the sum is 38.

The square root of 1669151612 is about 40855.2519512486. The cubic root of 1669151612 is about 1186.2200545849.

The spelling of 1669151612 in words is "one billion, six hundred sixty-nine million, one hundred fifty-one thousand, six hundred twelve".