1085988501 has 12 divisors (see below), whose sum is σ = 1689315628. Its totient is φ = 668300544.

The previous prime is 1085988481. The next prime is 1085988503. The reversal of 1085988501 is 1058895801.

1085988501 is a `hidden beast` number, since 1 + 0 + 8 + 598 + 8 + 50 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 508547601 + 577440900 = 22551^2 + 24030^2 .

It is not a de Polignac number, because 1085988501 - 2¹¹ = 1085986453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1085988503) 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, 4640860 + ... + 4641093.

Almost surely, 2^1085988501 is an apocalyptic number.

It is an amenable number.

1085988501 is a deficient number, since it is larger than the sum of its proper divisors (603327127).

1085988501 is a wasteful number, since it uses less digits than its factorization.

1085988501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9281972 (or 9281969 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 45.

The square root of 1085988501 is about 32954.3396383542. The cubic root of 1085988501 is about 1027.8784057431.

The spelling of 1085988501 in words is "one billion, eighty-five million, nine hundred eighty-eight thousand, five hundred one".