1306188228258 has 24 divisors (see below), whose sum is σ = 2830106214000. Its totient is φ = 435391196184.

The previous prime is 1306188228251. The next prime is 1306188228263. The reversal of 1306188228258 is 8528228816031.

1306188228258 is a `hidden beast` number, since 1 + 30 + 61 + 88 + 228 + 258 = 666.

It is a super-2 number, since 2×1306188228258² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1306188228251) 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, 1480693 + ... + 2191991.

It is an arithmetic number, because the mean of its divisors is an integer number (117921092250).

Almost surely, 2^{1306188228258} is an apocalyptic number.

1306188228258 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1306188228258 is an abundant number, since it is smaller than the sum of its proper divisors (1523917985742).

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

1306188228258 is a wasteful number, since it uses less digits than its factorization.

1306188228258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 813326 (or 813323 counting only the distinct ones).

The product of its (nonzero) digits is 2949120, while the sum is 54.

The spelling of 1306188228258 in words is "one trillion, three hundred six billion, one hundred eighty-eight million, two hundred twenty-eight thousand, two hundred fifty-eight".