2978386351 has 2 divisors, whose sum is σ = 2978386352. Its totient is φ = 2978386350.

The previous prime is 2978386297. The next prime is 2978386361. The reversal of 2978386351 is 1536838792.

2978386351 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2978386351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2978386361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1489193175 + 1489193176.

It is an arithmetic number, because the mean of its divisors is an integer number (1489193176).

Almost surely, 2^2978386351 is an apocalyptic number.

2978386351 is a deficient number, since it is larger than the sum of its proper divisors (1).

2978386351 is an equidigital number, since it uses as much as digits as its factorization.

2978386351 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2177280, while the sum is 52.

The square root of 2978386351 is about 54574.5943732063. The cubic root of 2978386351 is about 1438.7776327742. Note that the first 3 decimals are identical.

The spelling of 2978386351 in words is "two billion, nine hundred seventy-eight million, three hundred eighty-six thousand, three hundred fifty-one".