7451743540 has 12 divisors (see below), whose sum is σ = 15648661476. Its totient is φ = 2980697408.

The previous prime is 7451743447. The next prime is 7451743543. The reversal of 7451743540 is 453471547.

It can be written as a sum of positive squares in 2 ways, for example, as 1323358884 + 6128384656 = 36378^2 + 78284^2 .

It is a super-3 number, since 3×7451743540³ (a number of 31 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7451743493 and 7451743502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7451743543) 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, 186293569 + ... + 186293608.

It is an arithmetic number, because the mean of its divisors is an integer number (1304055123).

Almost surely, 2^7451743540 is an apocalyptic number.

It is an amenable number.

7451743540 is an abundant number, since it is smaller than the sum of its proper divisors (8196917936).

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

7451743540 is a wasteful number, since it uses less digits than its factorization.

7451743540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372587186 (or 372587184 counting only the distinct ones).

The product of its (nonzero) digits is 235200, while the sum is 40.

The square root of 7451743540 is about 86323.4819733310. The cubic root of 7451743540 is about 1953.2266142299.

The spelling of 7451743540 in words is "seven billion, four hundred fifty-one million, seven hundred forty-three thousand, five hundred forty".