4002948561 has 16 divisors (see below), whose sum is σ = 5649716160. Its totient is φ = 2516687040.

The previous prime is 4002948553. The next prime is 4002948569. The reversal of 4002948561 is 1658492004.

4002948561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (4002948553) and next prime (4002948569).

It is not a de Polignac number, because 4002948561 - 2³ = 4002948553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4002948569) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 531270 + ... + 538751.

It is an arithmetic number, because the mean of its divisors is an integer number (353107260).

Almost surely, 2^4002948561 is an apocalyptic number.

It is an amenable number.

4002948561 is a deficient number, since it is larger than the sum of its proper divisors (1646767599).

4002948561 is a wasteful number, since it uses less digits than its factorization.

4002948561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1070096.

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 4002948561 is about 63268.8593306375. The cubic root of 4002948561 is about 1587.7910019041.

The spelling of 4002948561 in words is "four billion, two million, nine hundred forty-eight thousand, five hundred sixty-one".