1522085138 has 30 divisors (see below), whose sum is σ = 2668229799. Its totient is φ = 651163548.

The previous prime is 1522085129. The next prime is 1522085171. The reversal of 1522085138 is 8315802251.

It can be written as a sum of positive squares in only one way, i.e., 761042569 + 761042569 = 27587^2 + 27587^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=27587.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1522085098 and 1522085107.

It is an unprimeable number.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 2703245 + ... + 2703807.

Almost surely, 2^1522085138 is an apocalyptic number.

1522085138 is a deficient number, since it is larger than the sum of its proper divisors (1146144661).

1522085138 is an frugal number, since it uses more digits than its factorization.

1522085138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1156 (or 572 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 35.

The square root of 1522085138 is about 39013.9095451866. The cubic root of 1522085138 is about 1150.3049318661.

Adding to 1522085138 its reverse (8315802251), we get a palindrome (9837887389).

The spelling of 1522085138 in words is "one billion, five hundred twenty-two million, eighty-five thousand, one hundred thirty-eight".