1601773449 has 8 divisors (see below), whose sum is σ = 2151287520. Its totient is φ = 1060054176.

The previous prime is 1601773447. The next prime is 1601773457. The reversal of 1601773449 is 9443771061.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1601773449 - 2¹ = 1601773447 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1601773449.

It is not an unprimeable number, because it can be changed into a prime (1601773447) 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 7 ways as a sum of consecutive naturals, for example, 1948219 + ... + 1949040.

It is an arithmetic number, because the mean of its divisors is an integer number (268910940).

Almost surely, 2^1601773449 is an apocalyptic number.

It is an amenable number.

1601773449 is a deficient number, since it is larger than the sum of its proper divisors (549514071).

1601773449 is a wasteful number, since it uses less digits than its factorization.

1601773449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3897399.

The product of its (nonzero) digits is 127008, while the sum is 42.

The square root of 1601773449 is about 40022.1619730869. The cubic root of 1601773449 is about 1170.0390687516.

The spelling of 1601773449 in words is "one billion, six hundred one million, seven hundred seventy-three thousand, four hundred forty-nine".