1538866485 has 64 divisors (see below), whose sum is σ = 2961826560. Its totient is φ = 753580800.

The previous prime is 1538866471. The next prime is 1538866507. The reversal of 1538866485 is 5846688351.

1538866485 is a `hidden beast` number, since 1 + 538 + 8 + 66 + 48 + 5 = 666.

It is not a de Polignac number, because 1538866485 - 2⁸ = 1538866229 is a prime.

It is a super-2 number, since 2×1538866485² = 4736220117312510450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 343510 + ... + 347960.

It is an arithmetic number, because the mean of its divisors is an integer number (46278540).

Almost surely, 2^1538866485 is an apocalyptic number.

1538866485 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1538866485 is a deficient number, since it is larger than the sum of its proper divisors (1422960075).

1538866485 is a wasteful number, since it uses less digits than its factorization.

1538866485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4675 (or 4669 counting only the distinct ones).

The product of its digits is 5529600, while the sum is 54.

The square root of 1538866485 is about 39228.3887637512. The cubic root of 1538866485 is about 1154.5169509822.

It can be divided in two parts, 1538866 and 485, that added together give a palindrome (1539351).

The spelling of 1538866485 in words is "one billion, five hundred thirty-eight million, eight hundred sixty-six thousand, four hundred eighty-five".