1258378210 has 16 divisors (see below), whose sum is σ = 2265852600. Its totient is φ = 503179776.

The previous prime is 1258378193. The next prime is 1258378213. The reversal of 1258378210 is 128738521.

It can be written as a sum of positive squares in 4 ways, for example, as 1255922721 + 2455489 = 35439^2 + 1567^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1258378210.

It is not an unprimeable number, because it can be changed into a prime (1258378213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11836 + ... + 51544.

Almost surely, 2^1258378210 is an apocalyptic number.

1258378210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1258378210 is a deficient number, since it is larger than the sum of its proper divisors (1007474390).

1258378210 is a wasteful number, since it uses less digits than its factorization.

1258378210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42885.

The product of its (nonzero) digits is 26880, while the sum is 37.

The square root of 1258378210 is about 35473.6269642674. The cubic root of 1258378210 is about 1079.6186954108.

The spelling of 1258378210 in words is "one billion, two hundred fifty-eight million, three hundred seventy-eight thousand, two hundred ten".