7149161138 has 32 divisors (see below), whose sum is σ = 12370805760. Its totient is φ = 3035264400.

The previous prime is 7149161137. The next prime is 7149161161. The reversal of 7149161138 is 8311619417.

It is a super-2 number, since 2×7149161138² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7149161095 and 7149161104.

It is not an unprimeable number, because it can be changed into a prime (7149161137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 796745 + ... + 805667.

It is an arithmetic number, because the mean of its divisors is an integer number (386587680).

Almost surely, 2^7149161138 is an apocalyptic number.

7149161138 is a deficient number, since it is larger than the sum of its proper divisors (5221644622).

7149161138 is a wasteful number, since it uses less digits than its factorization.

7149161138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9462.

The product of its digits is 36288, while the sum is 41.

The square root of 7149161138 is about 84552.7121859494. The cubic root of 7149161138 is about 1926.4231799130.

The spelling of 7149161138 in words is "seven billion, one hundred forty-nine million, one hundred sixty-one thousand, one hundred thirty-eight".