1329207894 has 80 divisors (see below), whose sum is σ = 3513793536. Its totient is φ = 367513200.

The previous prime is 1329207853. The next prime is 1329207967. The reversal of 1329207894 is 4987029231.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 16249 + ... + 54059.

Almost surely, 2^1329207894 is an apocalyptic number.

1329207894 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1329207894, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1756896768).

1329207894 is an abundant number, since it is smaller than the sum of its proper divisors (2184585642).

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

1329207894 is a wasteful number, since it uses less digits than its factorization.

1329207894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37863 (or 37854 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 1329207894 is about 36458.3034986545. The cubic root of 1329207894 is about 1099.5060851458.

The spelling of 1329207894 in words is "one billion, three hundred twenty-nine million, two hundred seven thousand, eight hundred ninety-four".