7438145139 has 8 divisors (see below), whose sum is σ = 11019474320. Its totient is φ = 4958763408.

The previous prime is 7438145131. The next prime is 7438145147. The reversal of 7438145139 is 9315418347.

It is an interprime number because it is at equal distance from previous prime (7438145131) and next prime (7438145147).

It is not a de Polignac number, because 7438145139 - 2³ = 7438145131 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7438145094 and 7438145103.

It is not an unprimeable number, because it can be changed into a prime (7438145131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137743402 + ... + 137743455.

It is an arithmetic number, because the mean of its divisors is an integer number (1377434290).

Almost surely, 2^7438145139 is an apocalyptic number.

7438145139 is a deficient number, since it is larger than the sum of its proper divisors (3581329181).

7438145139 is a wasteful number, since it uses less digits than its factorization.

7438145139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275486866 (or 275486860 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 7438145139 is about 86244.6818012566. The cubic root of 7438145139 is about 1952.0377679967.

The spelling of 7438145139 in words is "seven billion, four hundred thirty-eight million, one hundred forty-five thousand, one hundred thirty-nine".