1085899264 has 60 divisors (see below), whose sum is σ = 2204972154. Its totient is φ = 534216704.

The previous prime is 1085899249. The next prime is 1085899277. The reversal of 1085899264 is 4629985801.

It can be written as a sum of positive squares in 3 ways, for example, as 707985664 + 377913600 = 26608^2 + 19440^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7926204 + ... + 7926340.

Almost surely, 2^1085899264 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1085899264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1102486077).

1085899264 is an abundant number, since it is smaller than the sum of its proper divisors (1119072890).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1085899264 is an frugal number, since it uses more digits than its factorization.

1085899264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405 (or 252 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 52.

The square root of 1085899264 is about 32952.9856613934. The cubic root of 1085899264 is about 1027.8502509644.

The spelling of 1085899264 in words is "one billion, eighty-five million, eight hundred ninety-nine thousand, two hundred sixty-four".