1238285555 has 8 divisors (see below), whose sum is σ = 1600246032. Its totient is φ = 914426208.

The previous prime is 1238285539. The next prime is 1238285557. The reversal of 1238285555 is 5555828321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1238285555 - 2⁴ = 1238285539 is a prime.

It is a super-2 number, since 2×1238285555² = 3066702231443316050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1238285557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9525209 + ... + 9525338.

It is an arithmetic number, because the mean of its divisors is an integer number (200030754).

Almost surely, 2^1238285555 is an apocalyptic number.

1238285555 is a deficient number, since it is larger than the sum of its proper divisors (361960477).

1238285555 is a wasteful number, since it uses less digits than its factorization.

1238285555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19050565.

The product of its digits is 480000, while the sum is 44.

The square root of 1238285555 is about 35189.2818198951. The cubic root of 1238285555 is about 1073.8417104112.

The spelling of 1238285555 in words is "one billion, two hundred thirty-eight million, two hundred eighty-five thousand, five hundred fifty-five".