7040208538 has 16 divisors (see below), whose sum is σ = 12198009024. Its totient is φ = 3011853760.

The previous prime is 7040208509. The next prime is 7040208547. The reversal of 7040208538 is 8358020407.

It is a junction number, because it is equal to n+sod(n) for n = 7040208497 and 7040208506.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9411670 + ... + 9412417.

It is an arithmetic number, because the mean of its divisors is an integer number (762375564).

Almost surely, 2^7040208538 is an apocalyptic number.

7040208538 is a deficient number, since it is larger than the sum of its proper divisors (5157800486).

7040208538 is a wasteful number, since it uses less digits than its factorization.

7040208538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18824117.

The product of its (nonzero) digits is 53760, while the sum is 37.

The square root of 7040208538 is about 83905.9505517934. The cubic root of 7040208538 is about 1916.5868667503.

The spelling of 7040208538 in words is "seven billion, forty million, two hundred eight thousand, five hundred thirty-eight".