1605161896 has 64 divisors (see below), whose sum is σ = 3542676480. Its totient is φ = 674749440.

The previous prime is 1605161867. The next prime is 1605161923. The reversal of 1605161896 is 6981615061.

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, 40165 + ... + 69451.

It is an arithmetic number, because the mean of its divisors is an integer number (55354320).

Almost surely, 2^1605161896 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 1605161896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1771338240).

1605161896 is an abundant number, since it is smaller than the sum of its proper divisors (1937514584).

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

1605161896 is a wasteful number, since it uses less digits than its factorization.

1605161896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29354 (or 29350 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 43.

The square root of 1605161896 is about 40064.4717424303. The cubic root of 1605161896 is about 1170.8635347058.

The spelling of 1605161896 in words is "one billion, six hundred five million, one hundred sixty-one thousand, eight hundred ninety-six".