1302172064 has 12 divisors (see below), whose sum is σ = 2563651314. Its totient is φ = 651086016.

The previous prime is 1302172061. The next prime is 1302172099. The reversal of 1302172064 is 4602712031.

It can be written as a sum of positive squares in only one way, i.e., 834747664 + 467424400 = 28892^2 + 21620^2 .

It is not an unprimeable number, because it can be changed into a prime (1302172061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20346407 + ... + 20346470.

Almost surely, 2^1302172064 is an apocalyptic number.

It is an amenable number.

1302172064 is a deficient number, since it is larger than the sum of its proper divisors (1261479250).

1302172064 is an equidigital number, since it uses as much as digits as its factorization.

1302172064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40692887 (or 40692879 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 1302172064 is about 36085.6212915893. The cubic root of 1302172064 is about 1092.0003846376. Note that the first 3 decimals are identical.

Adding to 1302172064 its reverse (4602712031), we get a palindrome (5904884095).

The spelling of 1302172064 in words is "one billion, three hundred two million, one hundred seventy-two thousand, sixty-four".