1601120003 has 4 divisors (see below), whose sum is σ = 1829851440. Its totient is φ = 1372388568.

The previous prime is 1601119997. The next prime is 1601120021. The reversal of 1601120003 is 3000211061.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1601120003 - 2²⁶ = 1534011139 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1601120003.

It is not an unprimeable number, because it can be changed into a prime (1601120803) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114365708 + ... + 114365721.

It is an arithmetic number, because the mean of its divisors is an integer number (457462860).

Almost surely, 2^1601120003 is an apocalyptic number.

1601120003 is a deficient number, since it is larger than the sum of its proper divisors (228731437).

1601120003 is an equidigital number, since it uses as much as digits as its factorization.

1601120003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228731436.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 1601120003 is about 40013.9975883440. The cubic root of 1601120003 is about 1169.8799406842.

Adding to 1601120003 its reverse (3000211061), we get a palindrome (4601331064).

The spelling of 1601120003 in words is "one billion, six hundred one million, one hundred twenty thousand, three".