1015211664 has 80 divisors (see below), whose sum is σ = 2917938240. Its totient is φ = 337950720.

The previous prime is 1015211663. The next prime is 1015211683. The reversal of 1015211664 is 4661125101.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1015211663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 524779 + ... + 526709.

It is an arithmetic number, because the mean of its divisors is an integer number (36474228).

Almost surely, 2^1015211664 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 1015211664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1458969120).

1015211664 is an abundant number, since it is smaller than the sum of its proper divisors (1902726576).

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

1015211664 is a wasteful number, since it uses less digits than its factorization.

1015211664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3165 (or 3153 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 1015211664 is about 31862.3863513077. The cubic root of 1015211664 is about 1005.0450592406.

Adding to 1015211664 its reverse (4661125101), we get a palindrome (5676336765).

The spelling of 1015211664 in words is "one billion, fifteen million, two hundred eleven thousand, six hundred sixty-four".