4013478861 has 32 divisors (see below), whose sum is σ = 6198571008. Its totient is φ = 2262452160.

The previous prime is 4013478839. The next prime is 4013478877. The reversal of 4013478861 is 1688743104.

It is not a de Polignac number, because 4013478861 - 2²² = 4009284557 is a prime.

It is a super-2 number, since 2×4013478861² = 32216025135387714642, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4013479861) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1638940 + ... + 1641386.

It is an arithmetic number, because the mean of its divisors is an integer number (193705344).

Almost surely, 2^4013478861 is an apocalyptic number.

It is an amenable number.

4013478861 is a deficient number, since it is larger than the sum of its proper divisors (2185092147).

4013478861 is a wasteful number, since it uses less digits than its factorization.

4013478861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3481.

The product of its (nonzero) digits is 129024, while the sum is 42.

The square root of 4013478861 is about 63352.0233378540. The cubic root of 4013478861 is about 1589.1820827857.

The spelling of 4013478861 in words is "four billion, thirteen million, four hundred seventy-eight thousand, eight hundred sixty-one".