1601001015 has 8 divisors (see below), whose sum is σ = 2561601648. Its totient is φ = 853867200.

The previous prime is 1601001013. The next prime is 1601001053. The reversal of 1601001015 is 5101001061.

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

It is not a de Polignac number, because 1601001015 - 2¹ = 1601001013 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15), and also a Moran number because the ratio is a prime number: 106733401 = 1601001015 / (1 + 6 + 0 + 1 + 0 + 0 + 1 + 0 + 1 + 5).

It is a junction number, because it is equal to n+sod(n) for n = 1601000985 and 1601001003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1601001013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53366686 + ... + 53366715.

It is an arithmetic number, because the mean of its divisors is an integer number (320200206).

Almost surely, 2^1601001015 is an apocalyptic number.

1601001015 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1601001015 is a deficient number, since it is larger than the sum of its proper divisors (960600633).

1601001015 is a wasteful number, since it uses less digits than its factorization.

1601001015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106733409.

The product of its (nonzero) digits is 30, while the sum is 15.

The square root of 1601001015 is about 40012.5107310201. The cubic root of 1601001015 is about 1169.8509599035.

Adding to 1601001015 its reverse (5101001061), we get a palindrome (6702002076).

The spelling of 1601001015 in words is "one billion, six hundred one million, one thousand, fifteen".