1942981147 has 2 divisors, whose sum is σ = 1942981148. Its totient is φ = 1942981146.

The previous prime is 1942981129. The next prime is 1942981151. The reversal of 1942981147 is 7411892491.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1942981147 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1942981097 and 1942981106.

It is not a weakly prime, because it can be changed into another prime (1942981247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 971490573 + 971490574.

It is an arithmetic number, because the mean of its divisors is an integer number (971490574).

Almost surely, 2^1942981147 is an apocalyptic number.

1942981147 is a deficient number, since it is larger than the sum of its proper divisors (1).

1942981147 is an equidigital number, since it uses as much as digits as its factorization.

1942981147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 46.

The square root of 1942981147 is about 44079.2598281777. The cubic root of 1942981147 is about 1247.8322207865.

It can be divided in two parts, 19429 and 81147, that added together give a triangular number (100576 = T₄₄₈).

The spelling of 1942981147 in words is "one billion, nine hundred forty-two million, nine hundred eighty-one thousand, one hundred forty-seven".