258283738 has 4 divisors (see below), whose sum is σ = 387425610. Its totient is φ = 129141868.

The previous prime is 258283691. The next prime is 258283741. The reversal of 258283738 is 837382852.

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., 224910009 + 33373729 = 14997^2 + 5777^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64570933 + ... + 64570936.

Almost surely, 2^258283738 is an apocalyptic number.

258283738 is a deficient number, since it is larger than the sum of its proper divisors (129141872).

258283738 is a wasteful number, since it uses less digits than its factorization.

258283738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129141871.

The product of its digits is 645120, while the sum is 46.

The square root of 258283738 is about 16071.2083553167. The cubic root of 258283738 is about 636.8429630960.

It can be divided in two parts, 2582 and 83738, that added together give a triangular number (86320 = T₄₁₅).

The spelling of 258283738 in words is "two hundred fifty-eight million, two hundred eighty-three thousand, seven hundred thirty-eight".