1015423664 has 20 divisors (see below), whose sum is σ = 1976057304. Its totient is φ = 505473408.

The previous prime is 1015423657. The next prime is 1015423667. The reversal of 1015423664 is 4663245101.

It is a super-3 number, since 3×1015423664³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 1015423664.

It is not an unprimeable number, because it can be changed into a prime (1015423667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136157 + ... + 143420.

Almost surely, 2^1015423664 is an apocalyptic number.

It is an amenable number.

1015423664 is a deficient number, since it is larger than the sum of its proper divisors (960633640).

1015423664 is a wasteful number, since it uses less digits than its factorization.

1015423664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279812 (or 279806 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 1015423664 is about 31865.7129843347. The cubic root of 1015423664 is about 1005.1150133630.

Adding to 1015423664 its reverse (4663245101), we get a palindrome (5678668765).

The spelling of 1015423664 in words is "one billion, fifteen million, four hundred twenty-three thousand, six hundred sixty-four".