7148635380 has 72 divisors (see below), whose sum is σ = 21876151752. Its totient is φ = 1889427456.

The previous prime is 7148635199. The next prime is 7148635387. The reversal of 7148635380 is 835368417.

7148635380 is a `hidden beast` number, since 7 + 1 + 4 + 8 + 635 + 3 + 8 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 559417104 + 6589218276 = 23652^2 + 81174^2 .

It is a super-2 number, since 2×7148635380² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7148635387) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 155389 + ... + 196068.

It is an arithmetic number, because the mean of its divisors is an integer number (303835441).

Almost surely, 2^7148635380 is an apocalyptic number.

It is an amenable number.

7148635380 is an abundant number, since it is smaller than the sum of its proper divisors (14727516372).

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

7148635380 is a wasteful number, since it uses less digits than its factorization.

7148635380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351585 (or 351580 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The square root of 7148635380 is about 84549.6030741718. The cubic root of 7148635380 is about 1926.3759549212.

The spelling of 7148635380 in words is "seven billion, one hundred forty-eight million, six hundred thirty-five thousand, three hundred eighty".