3001638 has 16 divisors (see below), whose sum is σ = 6264576. Its totient is φ = 957000.

The previous prime is 3001633. The next prime is 3001643. The reversal of 3001638 is 8361003.

It is an interprime number because it is at equal distance from previous prime (3001633) and next prime (3001643).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3001631) 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, 10738 + ... + 11013.

It is an arithmetic number, because the mean of its divisors is an integer number (391536).

Almost surely, 2^3001638 is an apocalyptic number.

3001638 is an abundant number, since it is smaller than the sum of its proper divisors (3262938).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3001638 is a wasteful number, since it uses less digits than its factorization.

3001638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21779.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 3001638 is about 1732.5235929130. The cubic root of 3001638 is about 144.2512011971.

The spelling of 3001638 in words is "three million, one thousand, six hundred thirty-eight".