538916139 has 8 divisors (see below), whose sum is σ = 798394320. Its totient is φ = 359277408.

The previous prime is 538916123. The next prime is 538916141. The reversal of 538916139 is 931619835.

It is not a de Polignac number, because 538916139 - 2⁴ = 538916123 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 538916094 and 538916103.

It is not an unprimeable number, because it can be changed into a prime (538916239) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9979902 + ... + 9979955.

It is an arithmetic number, because the mean of its divisors is an integer number (99799290).

Almost surely, 2^538916139 is an apocalyptic number.

538916139 is a deficient number, since it is larger than the sum of its proper divisors (259478181).

538916139 is a wasteful number, since it uses less digits than its factorization.

538916139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19959866 (or 19959860 counting only the distinct ones).

The product of its digits is 174960, while the sum is 45.

The square root of 538916139 is about 23214.5673877417. The cubic root of 538916139 is about 813.7800957248.

It can be divided in two parts, 5389 and 16139, that added together give a triangular number (21528 = T₂₀₇).

The spelling of 538916139 in words is "five hundred thirty-eight million, nine hundred sixteen thousand, one hundred thirty-nine".