4001012646 has 8 divisors (see below), whose sum is σ = 8002025304. Its totient is φ = 1333670880.

The previous prime is 4001012629. The next prime is 4001012651. The reversal of 4001012646 is 6462101004.

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

4001012646 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 333417715 + ... + 333417726.

It is an arithmetic number, because the mean of its divisors is an integer number (1000253163).

Almost surely, 2^4001012646 is an apocalyptic number.

4001012646 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

4001012646 is a wasteful number, since it uses less digits than its factorization.

4001012646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 666835446.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 4001012646 is about 63253.5583663085. The cubic root of 4001012646 is about 1587.5349969427.

The spelling of 4001012646 in words is "four billion, one million, twelve thousand, six hundred forty-six".