511671138 has 32 divisors (see below), whose sum is σ = 1117642752. Its totient is φ = 154875600.

The previous prime is 511671109. The next prime is 511671203. The reversal of 511671138 is 831176115.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 511671099 and 511671108.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61495 + ... + 69317.

It is an arithmetic number, because the mean of its divisors is an integer number (34926336).

Almost surely, 2^511671138 is an apocalyptic number.

511671138 is an abundant number, since it is smaller than the sum of its proper divisors (605971614).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

511671138 is a wasteful number, since it uses less digits than its factorization.

511671138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8830.

The product of its digits is 5040, while the sum is 33.

The square root of 511671138 is about 22620.1489385017. The cubic root of 511671138 is about 799.8286810232.

The spelling of 511671138 in words is "five hundred eleven million, six hundred seventy-one thousand, one hundred thirty-eight".