5129100381 has 16 divisors (see below), whose sum is σ = 7077888000. Its totient is φ = 3300434160.

The previous prime is 5129100371. The next prime is 5129100391. The reversal of 5129100381 is 1830019215.

It is an interprime number because it is at equal distance from previous prime (5129100371) and next prime (5129100391).

It is not a de Polignac number, because 5129100381 - 2¹⁰ = 5129099357 is a prime.

It is a super-2 number, since 2×5129100381² = 52615341436748690322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5129100371) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36381 + ... + 107618.

It is an arithmetic number, because the mean of its divisors is an integer number (442368000).

Almost surely, 2^5129100381 is an apocalyptic number.

It is an amenable number.

5129100381 is a deficient number, since it is larger than the sum of its proper divisors (1948787619).

5129100381 is a wasteful number, since it uses less digits than its factorization.

5129100381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144416.

The product of its (nonzero) digits is 2160, while the sum is 30.

The square root of 5129100381 is about 71617.7378936252. The cubic root of 5129100381 is about 1724.5683026427.

Adding to 5129100381 its reverse (1830019215), we get a palindrome (6959119596).

The spelling of 5129100381 in words is "five billion, one hundred twenty-nine million, one hundred thousand, three hundred eighty-one".