2978916351 has 4 divisors (see below), whose sum is σ = 3971888472. Its totient is φ = 1985944232.

The previous prime is 2978916271. The next prime is 2978916379. The reversal of 2978916351 is 1536198792.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2978916351 - 2⁷ = 2978916223 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2978916294 and 2978916303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2978916751) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 496486056 + ... + 496486061.

It is an arithmetic number, because the mean of its divisors is an integer number (992972118).

Almost surely, 2^2978916351 is an apocalyptic number.

2978916351 is a deficient number, since it is larger than the sum of its proper divisors (992972121).

2978916351 is an equidigital number, since it uses as much as digits as its factorization.

2978916351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 992972120.

The product of its digits is 816480, while the sum is 51.

The square root of 2978916351 is about 54579.4498964583. The cubic root of 2978916351 is about 1438.8629705856.

The spelling of 2978916351 in words is "two billion, nine hundred seventy-eight million, nine hundred sixteen thousand, three hundred fifty-one".