1260631216 has 40 divisors (see below), whose sum is σ = 2654534960. Its totient is φ = 576481536.

The previous prime is 1260631193. The next prime is 1260631217. The reversal of 1260631216 is 6121360621.

It is not an unprimeable number, because it can be changed into a prime (1260631217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5130 + ... + 50473.

It is an arithmetic number, because the mean of its divisors is an integer number (66363374).

Almost surely, 2^1260631216 is an apocalyptic number.

1260631216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1260631216 is an abundant number, since it is smaller than the sum of its proper divisors (1393903744).

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

1260631216 is a wasteful number, since it uses less digits than its factorization.

1260631216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55733 (or 55727 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 1260631216 is about 35505.3688334595. The cubic root of 1260631216 is about 1080.2626293169.

Adding to 1260631216 its reverse (6121360621), we get a palindrome (7381991837).

The spelling of 1260631216 in words is "one billion, two hundred sixty million, six hundred thirty-one thousand, two hundred sixteen".