380970981 has 24 divisors (see below), whose sum is σ = 567398520. Its totient is φ = 246139776.

The previous prime is 380970977. The next prime is 380971001. The reversal of 380970981 is 189079083.

It can be written as a sum of positive squares in 4 ways, for example, as 6200100 + 374770881 = 2490^2 + 19359^2 .

It is not a de Polignac number, because 380970981 - 2² = 380970977 is a prime.

It is a super-2 number, since 2×380970981² = 290277776728204722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (380970971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 87451 + ... + 91703.

It is an arithmetic number, because the mean of its divisors is an integer number (23641605).

Almost surely, 2^380970981 is an apocalyptic number.

It is an amenable number.

380970981 is a deficient number, since it is larger than the sum of its proper divisors (186427539).

380970981 is a wasteful number, since it uses less digits than its factorization.

380970981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4565 (or 4562 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 45.

The square root of 380970981 is about 19518.4779375852. The cubic root of 380970981 is about 724.9320465838.

The spelling of 380970981 in words is "three hundred eighty million, nine hundred seventy thousand, nine hundred eighty-one".