513843146 has 4 divisors (see below), whose sum is σ = 770764722. Its totient is φ = 256921572.

The previous prime is 513843137. The next prime is 513843149. The reversal of 513843146 is 641348315.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 641348315 = 5 ⋅128269663.

It can be written as a sum of positive squares in only one way, i.e., 476767225 + 37075921 = 21835^2 + 6089^2 .

It is not an unprimeable number, because it can be changed into a prime (513843149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128460785 + ... + 128460788.

Almost surely, 2^513843146 is an apocalyptic number.

513843146 is a deficient number, since it is larger than the sum of its proper divisors (256921576).

513843146 is a wasteful number, since it uses less digits than its factorization.

513843146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256921575.

The product of its digits is 34560, while the sum is 35.

The square root of 513843146 is about 22668.1085668831. The cubic root of 513843146 is about 800.9588222408.

It can be divided in two parts, 5138 and 43146, that added together give a palindrome (48284).

The spelling of 513843146 in words is "five hundred thirteen million, eight hundred forty-three thousand, one hundred forty-six".