238136642 has 16 divisors (see below), whose sum is σ = 359859840. Its totient is φ = 118186992.

The previous prime is 238136621. The next prime is 238136653. The reversal of 238136642 is 246631832.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 211493 + ... + 212615.

It is an arithmetic number, because the mean of its divisors is an integer number (22491240).

Almost surely, 2^238136642 is an apocalyptic number.

238136642 is a deficient number, since it is larger than the sum of its proper divisors (121723198).

238136642 is a wasteful number, since it uses less digits than its factorization.

238136642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1817.

The product of its digits is 41472, while the sum is 35.

The square root of 238136642 is about 15431.6765777410. The cubic root of 238136642 is about 619.8340190445.

The spelling of 238136642 in words is "two hundred thirty-eight million, one hundred thirty-six thousand, six hundred forty-two".