1662002069 has 16 divisors (see below), whose sum is σ = 2046992640. Its totient is φ = 1314057600.

The previous prime is 1662002053. The next prime is 1662002077. The reversal of 1662002069 is 9602002661.

It is a cyclic number.

It is not a de Polignac number, because 1662002069 - 2⁴ = 1662002053 is a prime.

It is a super-2 number, since 2×1662002069² = 5524501754720561522, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1662002099) 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, 140744 + ... + 152094.

It is an arithmetic number, because the mean of its divisors is an integer number (127937040).

Almost surely, 2^1662002069 is an apocalyptic number.

It is an amenable number.

1662002069 is a deficient number, since it is larger than the sum of its proper divisors (384990571).

1662002069 is a wasteful number, since it uses less digits than its factorization.

1662002069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12980.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 1662002069 is about 40767.6595967931. The cubic root of 1662002069 is about 1184.5239695745.

The spelling of 1662002069 in words is "one billion, six hundred sixty-two million, two thousand, sixty-nine".