1601187 has 16 divisors (see below), whose sum is σ = 2568960. Its totient is φ = 866592.

The previous prime is 1601161. The next prime is 1601203. The reversal of 1601187 is 7811061.

It is not a de Polignac number, because 1601187 - 2⁶ = 1601123 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1601107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1608 + ... + 2405.

It is an arithmetic number, because the mean of its divisors is an integer number (160560).

2^1601187 is an apocalyptic number.

1601187 is a deficient number, since it is larger than the sum of its proper divisors (967773).

1601187 is a wasteful number, since it uses less digits than its factorization.

1601187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4042.

The product of its (nonzero) digits is 336, while the sum is 24.

The square root of 1601187 is about 1265.3801800250. The cubic root of 1601187 is about 116.9896257877.

The spelling of 1601187 in words is "one million, six hundred one thousand, one hundred eighty-seven".