350387138 has 4 divisors (see below), whose sum is σ = 525580710. Its totient is φ = 175193568.

The previous prime is 350387137. The next prime is 350387143. The reversal of 350387138 is 831783053.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 260080129 + 90307009 = 16127^2 + 9503^2 .

It is a super-2 number, since 2×350387138² = 245542292951662088, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (350387131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 87596783 + ... + 87596786.

Almost surely, 2^350387138 is an apocalyptic number.

350387138 is a deficient number, since it is larger than the sum of its proper divisors (175193572).

350387138 is a wasteful number, since it uses less digits than its factorization.

350387138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175193571.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 350387138 is about 18718.6307725752. The cubic root of 350387138 is about 704.9896133808.

The spelling of 350387138 in words is "three hundred fifty million, three hundred eighty-seven thousand, one hundred thirty-eight".