1916982731 has 2 divisors, whose sum is σ = 1916982732. Its totient is φ = 1916982730.

The previous prime is 1916982709. The next prime is 1916982733. The reversal of 1916982731 is 1372896191.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1916982731 - 2⁶ = 1916982667 is a prime.

It is a super-2 number, since 2×1916982731² = 7349645581904436722, which contains 22 as substring.

Together with 1916982733, 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 (1916982733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 958491365 + 958491366.

It is an arithmetic number, because the mean of its divisors is an integer number (958491366).

Almost surely, 2^1916982731 is an apocalyptic number.

1916982731 is a deficient number, since it is larger than the sum of its proper divisors (1).

1916982731 is an equidigital number, since it uses as much as digits as its factorization.

1916982731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 163296, while the sum is 47.

The square root of 1916982731 is about 43783.3613488046. The cubic root of 1916982731 is about 1242.2415946236.

The spelling of 1916982731 in words is "one billion, nine hundred sixteen million, nine hundred eighty-two thousand, seven hundred thirty-one".