7438145140 has 12 divisors (see below), whose sum is σ = 15620104836. Its totient is φ = 2975258048.

The previous prime is 7438145131. The next prime is 7438145147. The reversal of 7438145140 is 415418347.

It can be written as a sum of positive squares in 2 ways, for example, as 4335432336 + 3102712804 = 65844^2 + 55702^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 7438145140.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7438145147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 185953609 + ... + 185953648.

It is an arithmetic number, because the mean of its divisors is an integer number (1301675403).

Almost surely, 2^7438145140 is an apocalyptic number.

It is an amenable number.

7438145140 is an abundant number, since it is smaller than the sum of its proper divisors (8181959696).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7438145140 is a wasteful number, since it uses less digits than its factorization.

7438145140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371907266 (or 371907264 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 37.

The square root of 7438145140 is about 86244.6818070541. The cubic root of 7438145140 is about 1952.0377680842.

The spelling of 7438145140 in words is "seven billion, four hundred thirty-eight million, one hundred forty-five thousand, one hundred forty".