8970151681 has 2 divisors, whose sum is σ = 8970151682. Its totient is φ = 8970151680.

The previous prime is 8970151633. The next prime is 8970151691. The reversal of 8970151681 is 1861510798.

8970151681 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8534803456 + 435348225 = 92384^2 + 20865^2 .

It is a cyclic number.

It is not a de Polignac number, because 8970151681 - 2¹³ = 8970143489 is a prime.

It is a super-2 number, since 2×8970151681² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8970151691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4485075840 + 4485075841.

It is an arithmetic number, because the mean of its divisors is an integer number (4485075841).

Almost surely, 2^8970151681 is an apocalyptic number.

It is an amenable number.

8970151681 is a deficient number, since it is larger than the sum of its proper divisors (1).

8970151681 is an equidigital number, since it uses as much as digits as its factorization.

8970151681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120960, while the sum is 46.

The square root of 8970151681 is about 94710.8847018124. The cubic root of 8970151681 is about 2077.7817575331.

The spelling of 8970151681 in words is "eight billion, nine hundred seventy million, one hundred fifty-one thousand, six hundred eighty-one".