1085215149 has 6 divisors (see below), whose sum is σ = 1567533006. Its totient is φ = 723476760.

The previous prime is 1085215129. The next prime is 1085215189. The reversal of 1085215149 is 9415125801.

It can be written as a sum of positive squares in only one way, i.e., 772562025 + 312653124 = 27795^2 + 17682^2 .

It is not a de Polignac number, because 1085215149 - 2¹³ = 1085206957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1085215129) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 60289722 + ... + 60289739.

It is an arithmetic number, because the mean of its divisors is an integer number (261255501).

Almost surely, 2^1085215149 is an apocalyptic number.

It is an amenable number.

1085215149 is a deficient number, since it is larger than the sum of its proper divisors (482317857).

1085215149 is a wasteful number, since it uses less digits than its factorization.

1085215149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120579467 (or 120579464 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 36.

The square root of 1085215149 is about 32942.6038588330. The cubic root of 1085215149 is about 1027.6343575525.

The spelling of 1085215149 in words is "one billion, eighty-five million, two hundred fifteen thousand, one hundred forty-nine".