1622004001645 has 16 divisors (see below), whose sum is σ = 2039748003072. Its totient is φ = 1235858673280.

The previous prime is 1622004001619. The next prime is 1622004001663. The reversal of 1622004001645 is 5461004002261.

It is a happy number.

It is not a de Polignac number, because 1622004001645 - 2²⁹ = 1621467130733 is a prime.

It is a super-3 number, since 3×1622004001645³ (a number of 38 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30240121 + ... + 30293710.

It is an arithmetic number, because the mean of its divisors is an integer number (127484250192).

Almost surely, 2^{1622004001645} is an apocalyptic number.

It is an amenable number.

1622004001645 is a deficient number, since it is larger than the sum of its proper divisors (417744001427).

1622004001645 is a wasteful number, since it uses less digits than its factorization.

1622004001645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60534092.

The product of its (nonzero) digits is 11520, while the sum is 31.

The spelling of 1622004001645 in words is "one trillion, six hundred twenty-two billion, four million, one thousand, six hundred forty-five".