1601065156 has 6 divisors (see below), whose sum is σ = 2801864030. Its totient is φ = 800532576.

The previous prime is 1601065133. The next prime is 1601065183. The reversal of 1601065156 is 6515601061.

It can be written as a sum of positive squares in only one way, i.e., 1131649600 + 469415556 = 33640^2 + 21666^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200133141 + ... + 200133148.

Almost surely, 2^1601065156 is an apocalyptic number.

It is an amenable number.

1601065156 is a deficient number, since it is larger than the sum of its proper divisors (1200798874).

1601065156 is a wasteful number, since it uses less digits than its factorization.

1601065156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400266293 (or 400266291 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 1601065156 is about 40013.3122348051. The cubic root of 1601065156 is about 1169.8665822980.

The spelling of 1601065156 in words is "one billion, six hundred one million, sixty-five thousand, one hundred fifty-six".