1620545562 has 16 divisors (see below), whose sum is σ = 3601212480. Its totient is φ = 540181836.

The previous prime is 1620545561. The next prime is 1620545567. The reversal of 1620545562 is 2655450261.

1620545562 is a `hidden beast` number, since 1 + 62 + 0 + 545 + 56 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (1620545561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15004998 + ... + 15005105.

It is an arithmetic number, because the mean of its divisors is an integer number (225075780).

Almost surely, 2^1620545562 is an apocalyptic number.

1620545562 is an abundant number, since it is smaller than the sum of its proper divisors (1980666918).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1620545562 is a wasteful number, since it uses less digits than its factorization.

1620545562 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30010114 (or 30010108 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The square root of 1620545562 is about 40256.0003229332. Note that the first 3 decimals coincide. The cubic root of 1620545562 is about 1174.5921172463.

The spelling of 1620545562 in words is "one billion, six hundred twenty million, five hundred forty-five thousand, five hundred sixty-two".