1941802997 has 2 divisors, whose sum is σ = 1941802998. Its totient is φ = 1941802996.

The previous prime is 1941802921. The next prime is 1941802999. The reversal of 1941802997 is 7992081491.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1851666961 + 90136036 = 43031^2 + 9494^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1941802997 is a prime.

Together with 1941802999, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1941802999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 970901498 + 970901499.

It is an arithmetic number, because the mean of its divisors is an integer number (970901499).

Almost surely, 2^1941802997 is an apocalyptic number.

It is an amenable number.

1941802997 is a deficient number, since it is larger than the sum of its proper divisors (1).

1941802997 is an equidigital number, since it uses as much as digits as its factorization.

1941802997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 326592, while the sum is 50.

The square root of 1941802997 is about 44065.8938068888. The cubic root of 1941802997 is about 1247.5799570975.

The spelling of 1941802997 in words is "one billion, nine hundred forty-one million, eight hundred two thousand, nine hundred ninety-seven".