129538190 has 16 divisors (see below), whose sum is σ = 234003600. Its totient is φ = 51629760.

The previous prime is 129538187. The next prime is 129538193. The reversal of 129538190 is 91835921.

It is an interprime number because it is at equal distance from previous prime (129538187) and next prime (129538193).

It is a super-2 number, since 2×129538190² = 33560285336952200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129538193) 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, 20240 + ... + 25859.

It is an arithmetic number, because the mean of its divisors is an integer number (14625225).

Almost surely, 2^129538190 is an apocalyptic number.

129538190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129538190 is a deficient number, since it is larger than the sum of its proper divisors (104465410).

129538190 is a wasteful number, since it uses less digits than its factorization.

129538190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46387.

The product of its (nonzero) digits is 19440, while the sum is 38.

The square root of 129538190 is about 11381.4845253157. The cubic root of 129538190 is about 505.9791348862.

The spelling of 129538190 in words is "one hundred twenty-nine million, five hundred thirty-eight thousand, one hundred ninety".