1605166944 has 48 divisors (see below), whose sum is σ = 4228523712. Its totient is φ = 533155968.

The previous prime is 1605166943. The next prime is 1605167051. The reversal of 1605166944 is 4496615061.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×1605166944² = 5153121836220598272, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1605166896 and 1605166905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1605166943) 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, 2374 + ... + 56709.

It is an arithmetic number, because the mean of its divisors is an integer number (88094244).

Almost surely, 2^1605166944 is an apocalyptic number.

It is an amenable number.

1605166944 is an abundant number, since it is smaller than the sum of its proper divisors (2623356768).

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

1605166944 is a wasteful number, since it uses less digits than its factorization.

1605166944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59379 (or 59371 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 42.

The square root of 1605166944 is about 40064.5347408403. The cubic root of 1605166944 is about 1170.8647621029.

The spelling of 1605166944 in words is "one billion, six hundred five million, one hundred sixty-six thousand, nine hundred forty-four".