1620000452 has 24 divisors (see below), whose sum is σ = 3327570624. Its totient is φ = 675520992.

The previous prime is 1620000433. The next prime is 1620000457. The reversal of 1620000452 is 2540000261.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1620000457) 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, 780818 + ... + 782889.

It is an arithmetic number, because the mean of its divisors is an integer number (138648776).

Almost surely, 2^1620000452 is an apocalyptic number.

It is an amenable number.

1620000452 is an abundant number, since it is smaller than the sum of its proper divisors (1707570172).

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

1620000452 is a wasteful number, since it uses less digits than its factorization.

1620000452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1563755 (or 1563753 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 1620000452 is about 40249.2292100110. The cubic root of 1620000452 is about 1174.4604015803.

The spelling of 1620000452 in words is "one billion, six hundred twenty million, four hundred fifty-two", and thus it is an aban number.