1620231064 has 32 divisors (see below), whose sum is σ = 3073554000. Its totient is φ = 800658432.

The previous prime is 1620231029. The next prime is 1620231083. The reversal of 1620231064 is 4601320261.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 340252 + ... + 344980.

Almost surely, 2^1620231064 is an apocalyptic number.

It is an amenable number.

1620231064 is a deficient number, since it is larger than the sum of its proper divisors (1453322936).

1620231064 is a wasteful number, since it uses less digits than its factorization.

1620231064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5227 (or 5223 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 1620231064 is about 40252.0939082677. The cubic root of 1620231064 is about 1174.5161282749.

The spelling of 1620231064 in words is "one billion, six hundred twenty million, two hundred thirty-one thousand, sixty-four".