1620146552 has 16 divisors (see below), whose sum is σ = 3135768000. Its totient is φ = 783941760.

The previous prime is 1620146551. The next prime is 1620146579. The reversal of 1620146552 is 2556410261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1620146551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3266177 + ... + 3266672.

It is an arithmetic number, because the mean of its divisors is an integer number (195985500).

Almost surely, 2^1620146552 is an apocalyptic number.

It is an amenable number.

1620146552 is a deficient number, since it is larger than the sum of its proper divisors (1515621448).

1620146552 is a wasteful number, since it uses less digits than its factorization.

1620146552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6532886 (or 6532882 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 1620146552 is about 40251.0441106812. The cubic root of 1620146552 is about 1174.4957068187.

The spelling of 1620146552 in words is "one billion, six hundred twenty million, one hundred forty-six thousand, five hundred fifty-two".