38139130 has 8 divisors (see below), whose sum is σ = 68650452. Its totient is φ = 15255648.

The previous prime is 38139121. The next prime is 38139131. The reversal of 38139130 is 3193183.

It can be written as a sum of positive squares in 2 ways, for example, as 35916049 + 2223081 = 5993^2 + 1491^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (38139131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1906947 + ... + 1906966.

Almost surely, 2^38139130 is an apocalyptic number.

38139130 is a deficient number, since it is larger than the sum of its proper divisors (30511322).

38139130 is a wasteful number, since it uses less digits than its factorization.

38139130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3813920.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 38139130 is about 6175.6886255704. The cubic root of 38139130 is about 336.6073493944.

It can be divided in two parts, 381 and 39130, that multiplied together give a triangular number (14908530 = T₅₄₆₀).

The spelling of 38139130 in words is "thirty-eight million, one hundred thirty-nine thousand, one hundred thirty".