1258000049 has 2 divisors, whose sum is σ = 1258000050. Its totient is φ = 1258000048.

The previous prime is 1257999991. The next prime is 1258000061. The reversal of 1258000049 is 9400008521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1257979024 + 21025 = 35468^2 + 145^2 .

It is an emirp because it is prime and its reverse (9400008521) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1258000049 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1257999985 and 1258000030.

It is not a weakly prime, because it can be changed into another prime (1258000069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 629000024 + 629000025.

It is an arithmetic number, because the mean of its divisors is an integer number (629000025).

Almost surely, 2^1258000049 is an apocalyptic number.

It is an amenable number.

1258000049 is a deficient number, since it is larger than the sum of its proper divisors (1).

1258000049 is an equidigital number, since it uses as much as digits as its factorization.

1258000049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 1258000049 is about 35468.2963926941. The cubic root of 1258000049 is about 1079.5105375226.

The spelling of 1258000049 in words is "one billion, two hundred fifty-eight million, forty-nine", and thus it is an aban number.