1601135769 has 16 divisors (see below), whose sum is σ = 2274835968. Its totient is φ = 998230272.

The previous prime is 1601135761. The next prime is 1601135881. The reversal of 1601135769 is 9675311061.

It is a happy number.

It is not a de Polignac number, because 1601135769 - 2³ = 1601135761 is a prime.

It is a super-2 number, since 2×1601135769² = 5127271501542442722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1601135761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91977 + ... + 107990.

It is an arithmetic number, because the mean of its divisors is an integer number (142177248).

Almost surely, 2^1601135769 is an apocalyptic number.

It is an amenable number.

1601135769 is a deficient number, since it is larger than the sum of its proper divisors (673700199).

1601135769 is a wasteful number, since it uses less digits than its factorization.

1601135769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200144.

The product of its (nonzero) digits is 34020, while the sum is 39.

The square root of 1601135769 is about 40014.1945939188. The cubic root of 1601135769 is about 1169.8837805518.

The spelling of 1601135769 in words is "one billion, six hundred one million, one hundred thirty-five thousand, seven hundred sixty-nine".