1258231938 has 8 divisors (see below), whose sum is σ = 2516463888. Its totient is φ = 419410644.

The previous prime is 1258231913. The next prime is 1258231957. The reversal of 1258231938 is 8391328521.

It is a happy number.

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

1258231938 is an admirable number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1258231938.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104852656 + ... + 104852667.

It is an arithmetic number, because the mean of its divisors is an integer number (314557986).

Almost surely, 2^1258231938 is an apocalyptic number.

1258231938 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1258231938 is a wasteful number, since it uses less digits than its factorization.

1258231938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209705328.

The product of its digits is 103680, while the sum is 42.

The square root of 1258231938 is about 35471.5652036952. The cubic root of 1258231938 is about 1079.5768627027.

The spelling of 1258231938 in words is "one billion, two hundred fifty-eight million, two hundred thirty-one thousand, nine hundred thirty-eight".