83351731849 has 9 divisors (see below), whose sum is σ = 83667904743. Its totient is φ = 83036752512.

The previous prime is 83351731847. The next prime is 83351731873. The reversal of 83351731849 is 94813715338.

The square root of 83351731849 is 288707.

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., 50937330249 + 32414401600 = 225693^2 + 180040^2 .

It is not a de Polignac number, because 83351731849 - 2¹ = 83351731847 is a prime.

It is a super-2 number, since 2×83351731849² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 83351731796 and 83351731805.

It is not an unprimeable number, because it can be changed into a prime (83351731847) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 129629122 + ... + 129629764.

Almost surely, 2^83351731849 is an apocalyptic number.

83351731849 is the 288707-th square number.

83351731849 is the 144354-th centered octagonal number.

It is an amenable number.

83351731849 is a deficient number, since it is larger than the sum of its proper divisors (316172894).

83351731849 is an frugal number, since it uses more digits than its factorization.

83351731849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2184 (or 1092 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 52.

The spelling of 83351731849 in words is "eighty-three billion, three hundred fifty-one million, seven hundred thirty-one thousand, eight hundred forty-nine".