1662646241 has 16 divisors (see below), whose sum is σ = 1801440000. Its totient is φ = 1529803968.

The previous prime is 1662646217. The next prime is 1662646247. The reversal of 1662646241 is 1426462661.

It is not a de Polignac number, because 1662646241 - 2³⁰ = 588904417 is a prime.

It is a super-2 number, since 2×1662646241² = 5528785045422860162, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1662646195 and 1662646204.

It is not an unprimeable number, because it can be changed into a prime (1662646247) 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, 180260 + ... + 189258.

It is an arithmetic number, because the mean of its divisors is an integer number (112590000).

Almost surely, 2^1662646241 is an apocalyptic number.

It is an amenable number.

1662646241 is a deficient number, since it is larger than the sum of its proper divisors (138793759).

1662646241 is a wasteful number, since it uses less digits than its factorization.

1662646241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9328.

The product of its digits is 82944, while the sum is 38.

The square root of 1662646241 is about 40775.5593585177. The cubic root of 1662646241 is about 1184.6769855522.

The spelling of 1662646241 in words is "one billion, six hundred sixty-two million, six hundred forty-six thousand, two hundred forty-one".