1623161550 has 96 divisors (see below), whose sum is σ = 4196874240. Its totient is φ = 414691200.

The previous prime is 1623161539. The next prime is 1623161563. The reversal of 1623161550 is 551613261.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 477256 + ... + 480644.

It is an arithmetic number, because the mean of its divisors is an integer number (43717440).

Almost surely, 2^1623161550 is an apocalyptic number.

1623161550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1623161550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2098437120).

1623161550 is an abundant number, since it is smaller than the sum of its proper divisors (2573712690).

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

1623161550 is a wasteful number, since it uses less digits than its factorization.

1623161550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3538 (or 3533 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 1623161550 is about 40288.4791224489. The cubic root of 1623161550 is about 1175.2238112971.

The spelling of 1623161550 in words is "one billion, six hundred twenty-three million, one hundred sixty-one thousand, five hundred fifty".