7149472438 has 4 divisors (see below), whose sum is σ = 10724208660. Its totient is φ = 3574736218.

The previous prime is 7149472427. The next prime is 7149472453. The reversal of 7149472438 is 8342749417.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×7149472438² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 7149472391 and 7149472400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1787368108 + ... + 1787368111.

It is an arithmetic number, because the mean of its divisors is an integer number (2681052165).

Almost surely, 2^7149472438 is an apocalyptic number.

7149472438 is a deficient number, since it is larger than the sum of its proper divisors (3574736222).

7149472438 is a wasteful number, since it uses less digits than its factorization.

7149472438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3574736221.

The product of its digits is 1354752, while the sum is 49.

The square root of 7149472438 is about 84554.5530293904. The cubic root of 7149472438 is about 1926.4511406215.

The spelling of 7149472438 in words is "seven billion, one hundred forty-nine million, four hundred seventy-two thousand, four hundred thirty-eight".