1263612416 has 40 divisors (see below), whose sum is σ = 2754292464. Its totient is φ = 574366720.

The previous prime is 1263612391. The next prime is 1263612439. The reversal of 1263612416 is 6142163621.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106550 + ... + 117813.

Almost surely, 2^1263612416 is an apocalyptic number.

1263612416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1263612416 is an abundant number, since it is smaller than the sum of its proper divisors (1490680048).

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

1263612416 is an equidigital number, since it uses as much as digits as its factorization.

1263612416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224392 (or 224376 counting only the distinct ones).

The product of its digits is 10368, while the sum is 32.

The square root of 1263612416 is about 35547.3264254852. The cubic root of 1263612416 is about 1081.1135108946.

It can be divided in two parts, 12636 and 12416, that added together give a palindrome (25052).

The spelling of 1263612416 in words is "one billion, two hundred sixty-three million, six hundred twelve thousand, four hundred sixteen".