1238630385 has 32 divisors (see below), whose sum is σ = 2070966528. Its totient is φ = 630967040.

The previous prime is 1238630381. The next prime is 1238630401. The reversal of 1238630385 is 5830368321.

It is not a de Polignac number, because 1238630385 - 2² = 1238630381 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1238630381) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 281059 + ... + 285431.

It is an arithmetic number, because the mean of its divisors is an integer number (64717704).

Almost surely, 2^1238630385 is an apocalyptic number.

1238630385 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1238630385 is a deficient number, since it is larger than the sum of its proper divisors (832336143).

1238630385 is a wasteful number, since it uses less digits than its factorization.

1238630385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5225.

The product of its (nonzero) digits is 103680, while the sum is 39.

The square root of 1238630385 is about 35194.1811241574. The cubic root of 1238630385 is about 1073.9413800629.

The spelling of 1238630385 in words is "one billion, two hundred thirty-eight million, six hundred thirty thousand, three hundred eighty-five".