1258349216 has 12 divisors (see below), whose sum is σ = 2477375082. Its totient is φ = 629174592.

The previous prime is 1258349207. The next prime is 1258349221. The reversal of 1258349216 is 6129438521.

It can be written as a sum of positive squares in only one way, i.e., 818188816 + 440160400 = 28604^2 + 20980^2 .

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19661675 + ... + 19661738.

Almost surely, 2^1258349216 is an apocalyptic number.

1258349216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1258349216 is a deficient number, since it is larger than the sum of its proper divisors (1219025866).

1258349216 is an equidigital number, since it uses as much as digits as its factorization.

1258349216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39323423 (or 39323415 counting only the distinct ones).

The product of its digits is 103680, while the sum is 41.

The square root of 1258349216 is about 35473.2182921144. The cubic root of 1258349216 is about 1079.6104035993.

The spelling of 1258349216 in words is "one billion, two hundred fifty-eight million, three hundred forty-nine thousand, two hundred sixteen".