7287993361 has 8 divisors (see below), whose sum is σ = 8080875648. Its totient is φ = 6516834000.

The previous prime is 7287993359. The next prime is 7287993379. The reversal of 7287993361 is 1633997827.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7287993361 - 2¹ = 7287993359 is a prime.

It is a super-2 number, since 2×7287993361² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7287993311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5430025 + ... + 5431366.

It is an arithmetic number, because the mean of its divisors is an integer number (1010109456).

Almost surely, 2^7287993361 is an apocalyptic number.

It is an amenable number.

7287993361 is a deficient number, since it is larger than the sum of its proper divisors (792882287).

7287993361 is a wasteful number, since it uses less digits than its factorization.

7287993361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10861463.

The product of its digits is 3429216, while the sum is 55.

The square root of 7287993361 is about 85369.7449978621. The cubic root of 7287993361 is about 1938.8132963622.

The spelling of 7287993361 in words is "seven billion, two hundred eighty-seven million, nine hundred ninety-three thousand, three hundred sixty-one".