1942645057 has 2 divisors, whose sum is σ = 1942645058. Its totient is φ = 1942645056.

The previous prime is 1942645051. The next prime is 1942645079. The reversal of 1942645057 is 7505462491.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1761984576 + 180660481 = 41976^2 + 13441^2 .

It is a cyclic number.

It is not a de Polignac number, because 1942645057 - 2¹¹ = 1942643009 is a prime.

It is not a weakly prime, because it can be changed into another prime (1942645051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 971322528 + 971322529.

It is an arithmetic number, because the mean of its divisors is an integer number (971322529).

Almost surely, 2^1942645057 is an apocalyptic number.

It is an amenable number.

1942645057 is a deficient number, since it is larger than the sum of its proper divisors (1).

1942645057 is an equidigital number, since it uses as much as digits as its factorization.

1942645057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 302400, while the sum is 43.

The square root of 1942645057 is about 44075.4473261475. The cubic root of 1942645057 is about 1247.7602681044.

The spelling of 1942645057 in words is "one billion, nine hundred forty-two million, six hundred forty-five thousand, fifty-seven".