1622811018816 has 315 divisors, whose sum is σ = 5212855038963. Its totient is φ = 498959585280.

The previous prime is 1622811018811. The next prime is 1622811018839. The reversal of 1622811018816 is 6188101182261.

The square root of 1622811018816 is 1273896.

It is a perfect power (a square), and thus also a powerful number.

1622811018816 is a `hidden beast` number, since 1 + 622 + 8 + 1 + 1 + 0 + 1 + 8 + 8 + 16 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 755856360000 + 866954658816 = 869400^2 + 931104^2 .

It is not an unprimeable number, because it can be changed into a prime (1622811018811) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 1192365976 + ... + 1192367336.

Almost surely, 2^{1622811018816} is an apocalyptic number.

1622811018816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

1622811018816 is the 1273896-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1622811018816

1622811018816 is an abundant number, since it is smaller than the sum of its proper divisors (3590044020147).

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

1622811018816 is an frugal number, since it uses more digits than its factorization.

1622811018816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2772 (or 1379 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 45.

The spelling of 1622811018816 in words is "one trillion, six hundred twenty-two billion, eight hundred eleven million, eighteen thousand, eight hundred sixteen".