5918378761 has 9 divisors (see below), whose sum is σ = 6247809831. Its totient is φ = 5605500384.

The previous prime is 5918378747. The next prime is 5918378801. The reversal of 5918378761 is 1678738195.

It is a happy number.

The square root of 5918378761 is 76931.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 1445444361 + 4472934400 = 38019^2 + 66880^2 .

It is not a de Polignac number, because 5918378761 - 2¹³ = 5918370569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5918378701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1459665 + ... + 1463713.

Almost surely, 2^5918378761 is an apocalyptic number.

5918378761 is the 76931-st square number.

5918378761 is the 38466-th centered octagonal number.

It is an amenable number.

5918378761 is a deficient number, since it is larger than the sum of its proper divisors (329431070).

5918378761 is an frugal number, since it uses more digits than its factorization.

5918378761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8136 (or 4068 counting only the distinct ones).

The product of its digits is 2540160, while the sum is 55.

The cubic root of 5918378761 is about 1808.8431871265.

The spelling of 5918378761 in words is "five billion, nine hundred eighteen million, three hundred seventy-eight thousand, seven hundred sixty-one".