7149688474 has 16 divisors (see below), whose sum is σ = 10927815912. Its totient is φ = 3507591168.

The previous prime is 7149688439. The next prime is 7149688477. The reversal of 7149688474 is 4748869417.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 6659376025 + 490312449 = 81605^2 + 22143^2 .

It is a super-2 number, since 2×7149688474² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7149688477) 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 7 ways as a sum of consecutive naturals, for example, 98689 + ... + 155044.

Almost surely, 2^7149688474 is an apocalyptic number.

7149688474 is a deficient number, since it is larger than the sum of its proper divisors (3778127438).

7149688474 is a wasteful number, since it uses less digits than its factorization.

7149688474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254001.

The product of its digits is 10838016, while the sum is 58.

The square root of 7149688474 is about 84555.8305145186. The cubic root of 7149688474 is about 1926.4705443192.

The spelling of 7149688474 in words is "seven billion, one hundred forty-nine million, six hundred eighty-eight thousand, four hundred seventy-four".