1331642070 has 96 divisors (see below), whose sum is σ = 3857518080. Its totient is φ = 315942720.

The previous prime is 1331642057. The next prime is 1331642077. The reversal of 1331642070 is 702461331.

1331642070 is a `hidden beast` number, since 13 + 3 + 1 + 642 + 0 + 7 + 0 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331642077) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 32221 + ... + 60839.

It is an arithmetic number, because the mean of its divisors is an integer number (40182480).

Almost surely, 2^1331642070 is an apocalyptic number.

1331642070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1331642070, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1928759040).

1331642070 is an abundant number, since it is smaller than the sum of its proper divisors (2525876010).

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

1331642070 is a wasteful number, since it uses less digits than its factorization.

1331642070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28690 (or 28687 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 1331642070 is about 36491.6712415313. The cubic root of 1331642070 is about 1100.1768503536.

The spelling of 1331642070 in words is "one billion, three hundred thirty-one million, six hundred forty-two thousand, seventy".