1299381102 has 80 divisors (see below), whose sum is σ = 3019805712. Its totient is φ = 417294720.

The previous prime is 1299381079. The next prime is 1299381107. The reversal of 1299381102 is 2011839921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1299381107) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 550108 + ... + 552464.

Almost surely, 2^1299381102 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1299381102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1509902856).

1299381102 is an abundant number, since it is smaller than the sum of its proper divisors (1720424610).

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

1299381102 is a wasteful number, since it uses less digits than its factorization.

1299381102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2495 (or 2486 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 36.

The square root of 1299381102 is about 36046.9291618579. The cubic root of 1299381102 is about 1091.2196604737.

The spelling of 1299381102 in words is "one billion, two hundred ninety-nine million, three hundred eighty-one thousand, one hundred two".