1246664416 has 12 divisors (see below), whose sum is σ = 2454370632. Its totient is φ = 623332192.

The previous prime is 1246664401. The next prime is 1246664429. The reversal of 1246664416 is 6144666421.

It is a super-2 number, since 2×1246664416² = 3108344332241242112, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19479100 + ... + 19479163.

It is an arithmetic number, because the mean of its divisors is an integer number (204530886).

Almost surely, 2^1246664416 is an apocalyptic number.

1246664416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1246664416 is a deficient number, since it is larger than the sum of its proper divisors (1207706216).

1246664416 is an equidigital number, since it uses as much as digits as its factorization.

1246664416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38958273 (or 38958265 counting only the distinct ones).

The product of its digits is 165888, while the sum is 40.

The square root of 1246664416 is about 35308.1352665360. The cubic root of 1246664416 is about 1076.2583184149.

The spelling of 1246664416 in words is "one billion, two hundred forty-six million, six hundred sixty-four thousand, four hundred sixteen".