1326616434 has 128 divisors (see below), whose sum is σ = 3489696000. Its totient is φ = 368271360.

The previous prime is 1326616409. The next prime is 1326616441. The reversal of 1326616434 is 4346166231.

1326616434 is a `hidden beast` number, since 1 + 3 + 2 + 6 + 6 + 1 + 643 + 4 = 666.

It is a super-2 number, since 2×1326616434² = 3519822325917752712, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1150002 + ... + 1151154.

It is an arithmetic number, because the mean of its divisors is an integer number (27263250).

Almost surely, 2^1326616434 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1326616434, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1744848000).

1326616434 is an abundant number, since it is smaller than the sum of its proper divisors (2163079566).

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

1326616434 is a wasteful number, since it uses less digits than its factorization.

1326616434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1337 (or 1331 counting only the distinct ones).

The product of its digits is 62208, while the sum is 36.

The square root of 1326616434 is about 36422.7461073434. The cubic root of 1326616434 is about 1098.7910779177.

The spelling of 1326616434 in words is "one billion, three hundred twenty-six million, six hundred sixteen thousand, four hundred thirty-four".