2975978009 has 2 divisors, whose sum is σ = 2975978010. Its totient is φ = 2975978008.

The previous prime is 2975977811. The next prime is 2975978011. The reversal of 2975978009 is 9008795792.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1783795225 + 1192182784 = 42235^2 + 34528^2 .

It is a cyclic number.

It is not a de Polignac number, because 2975978009 - 2¹⁶ = 2975912473 is a prime.

It is a super-2 number, since 2×2975978009² = 17712890220103208162, which contains 22 as substring.

Together with 2975978011, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2975978069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1487989004 + 1487989005.

It is an arithmetic number, because the mean of its divisors is an integer number (1487989005).

Almost surely, 2^2975978009 is an apocalyptic number.

It is an amenable number.

2975978009 is a deficient number, since it is larger than the sum of its proper divisors (1).

2975978009 is an equidigital number, since it uses as much as digits as its factorization.

2975978009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2857680, while the sum is 56.

The square root of 2975978009 is about 54552.5252302769. The cubic root of 2975978009 is about 1438.3897266430.

The spelling of 2975978009 in words is "two billion, nine hundred seventy-five million, nine hundred seventy-eight thousand, nine".