1620472552 has 16 divisors (see below), whose sum is σ = 3044225700. Its totient is φ = 808679040.

The previous prime is 1620472543. The next prime is 1620472577. The reversal of 1620472552 is 2552740261.

It can be written as a sum of positive squares in 2 ways, for example, as 1589935876 + 30536676 = 39874^2 + 5526^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 190227 + ... + 198562.

Almost surely, 2^1620472552 is an apocalyptic number.

It is an amenable number.

1620472552 is a deficient number, since it is larger than the sum of its proper divisors (1423753148).

1620472552 is a wasteful number, since it uses less digits than its factorization.

1620472552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389316 (or 389312 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 34.

The square root of 1620472552 is about 40255.0934913832. The cubic root of 1620472552 is about 1174.5744774546.

The spelling of 1620472552 in words is "one billion, six hundred twenty million, four hundred seventy-two thousand, five hundred fifty-two".