1258490349 has 12 divisors (see below), whose sum is σ = 1838245500. Its totient is φ = 829566144.

The previous prime is 1258490341. The next prime is 1258490369. The reversal of 1258490349 is 9430948521.

1258490349 is a `hidden beast` number, since 125 + 8 + 490 + 34 + 9 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 818246025 + 440244324 = 28605^2 + 20982^2 .

It is not a de Polignac number, because 1258490349 - 2³ = 1258490341 is a prime.

It is a super-3 number, since 3×1258490349³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1258490341) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 784774 + ... + 786375.

It is an arithmetic number, because the mean of its divisors is an integer number (153187125).

Almost surely, 2^1258490349 is an apocalyptic number.

It is an amenable number.

1258490349 is a deficient number, since it is larger than the sum of its proper divisors (579755151).

1258490349 is a wasteful number, since it uses less digits than its factorization.

1258490349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1571244 (or 1571241 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 1258490349 is about 35475.2075258201. The cubic root of 1258490349 is about 1079.6507641386.

The spelling of 1258490349 in words is "one billion, two hundred fifty-eight million, four hundred ninety thousand, three hundred forty-nine".