1086491664 has 160 divisors (see below), whose sum is σ = 3331215360. Its totient is φ = 338228352.

The previous prime is 1086491657. The next prime is 1086491669. The reversal of 1086491664 is 4661946801.

It is a super-3 number, since 3×1086491664³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1086491669) 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, 425977 + ... + 428519.

It is an arithmetic number, because the mean of its divisors is an integer number (20820096).

Almost surely, 2^1086491664 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 1086491664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1665607680).

1086491664 is an abundant number, since it is smaller than the sum of its proper divisors (2244723696).

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

1086491664 is a wasteful number, since it uses less digits than its factorization.

1086491664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2626 (or 2614 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 1086491664 is about 32961.9729992002. The cubic root of 1086491664 is about 1028.0371276593.

The spelling of 1086491664 in words is "one billion, eighty-six million, four hundred ninety-one thousand, six hundred sixty-four".