1620206343 has 48 divisors (see below), whose sum is σ = 2732947776. Its totient is φ = 905748480.

The previous prime is 1620206327. The next prime is 1620206353. The reversal of 1620206343 is 3436020261.

1620206343 is a `hidden beast` number, since 1 + 6 + 2 + 0 + 20 + 634 + 3 = 666.

It is not a de Polignac number, because 1620206343 - 2⁴ = 1620206327 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1620206303) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2139921 + ... + 2140677.

It is an arithmetic number, because the mean of its divisors is an integer number (56936412).

Almost surely, 2^1620206343 is an apocalyptic number.

1620206343 is a deficient number, since it is larger than the sum of its proper divisors (1112741433).

1620206343 is a wasteful number, since it uses less digits than its factorization.

1620206343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1464 (or 1461 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 1620206343 is about 40251.7868299036. The cubic root of 1620206343 is about 1174.5101547728.

The spelling of 1620206343 in words is "one billion, six hundred twenty million, two hundred six thousand, three hundred forty-three".