1623355552 has 96 divisors (see below), whose sum is σ = 3950964864. Its totient is φ = 639360000.

The previous prime is 1623355543. The next prime is 1623355553. The reversal of 1623355552 is 2555533261.

It is not an unprimeable number, because it can be changed into a prime (1623355553) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 729802 + ... + 732022.

It is an arithmetic number, because the mean of its divisors is an integer number (41155884).

Almost surely, 2^1623355552 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1623355552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1975482432).

1623355552 is an abundant number, since it is smaller than the sum of its proper divisors (2327609312).

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

1623355552 is a wasteful number, since it uses less digits than its factorization.

1623355552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2502 (or 2494 counting only the distinct ones).

The product of its digits is 135000, while the sum is 37.

The square root of 1623355552 is about 40290.8867115133. The cubic root of 1623355552 is about 1175.2706307664.

The spelling of 1623355552 in words is "one billion, six hundred twenty-three million, three hundred fifty-five thousand, five hundred fifty-two".