7740047138 has 16 divisors (see below), whose sum is σ = 12481153920. Its totient is φ = 3588330096.

The previous prime is 7740047129. The next prime is 7740047153. The reversal of 7740047138 is 8317400477.

It is a junction number, because it is equal to n+sod(n) for n = 7740047095 and 7740047104.

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, 2165081 + ... + 2168652.

It is an arithmetic number, because the mean of its divisors is an integer number (780072120).

Almost surely, 2^7740047138 is an apocalyptic number.

7740047138 is a deficient number, since it is larger than the sum of its proper divisors (4741106782).

7740047138 is a wasteful number, since it uses less digits than its factorization.

7740047138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4333801.

The product of its (nonzero) digits is 131712, while the sum is 41.

The square root of 7740047138 is about 87977.5376900263. The cubic root of 7740047138 is about 1978.0982946440.

The spelling of 7740047138 in words is "seven billion, seven hundred forty million, forty-seven thousand, one hundred thirty-eight".