513538955386 has 8 divisors (see below), whose sum is σ = 770312005524. Its totient is φ = 256768286880.

The previous prime is 513538955383. The next prime is 513538955393. The reversal of 513538955386 is 683559835315.

It can be written as a sum of positive squares in 2 ways, for example, as 469747115161 + 43791840225 = 685381^2 + 209265^2 .

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

It is not an unprimeable number, because it can be changed into a prime (513538955383) 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, 111526 + ... + 1019566.

Almost surely, 2^513538955386 is an apocalyptic number.

513538955386 is a deficient number, since it is larger than the sum of its proper divisors (256773050138).

513538955386 is a wasteful number, since it uses less digits than its factorization.

513538955386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1190816.

The product of its digits is 58320000, while the sum is 61.

The spelling of 513538955386 in words is "five hundred thirteen billion, five hundred thirty-eight million, nine hundred fifty-five thousand, three hundred eighty-six".