1085904155 has 32 divisors (see below), whose sum is σ = 1613551104. Its totient is φ = 684504576.

The previous prime is 1085904151. The next prime is 1085904167. The reversal of 1085904155 is 5514095801.

It is not a de Polignac number, because 1085904155 - 2² = 1085904151 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1085904151) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4364 + ... + 46806.

It is an arithmetic number, because the mean of its divisors is an integer number (50423472).

Almost surely, 2^1085904155 is an apocalyptic number.

1085904155 is a deficient number, since it is larger than the sum of its proper divisors (527646949).

1085904155 is a wasteful number, since it uses less digits than its factorization.

1085904155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42515.

The product of its (nonzero) digits is 36000, while the sum is 38.

The square root of 1085904155 is about 32953.0598730983. The cubic root of 1085904155 is about 1027.8517941425.

Adding to 1085904155 its reverse (5514095801), we get a palindrome (6599999956).

The spelling of 1085904155 in words is "one billion, eighty-five million, nine hundred four thousand, one hundred fifty-five".