1994529937 has 2 divisors, whose sum is σ = 1994529938. Its totient is φ = 1994529936.

The previous prime is 1994529907. The next prime is 1994529949. The reversal of 1994529937 is 7399254991.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1989516816 + 5013121 = 44604^2 + 2239^2 .

It is a cyclic number.

It is not a de Polignac number, because 1994529937 - 2²³ = 1986141329 is a prime.

It is not a weakly prime, because it can be changed into another prime (1994529907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 997264968 + 997264969.

It is an arithmetic number, because the mean of its divisors is an integer number (997264969).

Almost surely, 2^1994529937 is an apocalyptic number.

It is an amenable number.

1994529937 is a deficient number, since it is larger than the sum of its proper divisors (1).

1994529937 is an equidigital number, since it uses as much as digits as its factorization.

1994529937 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5511240, while the sum is 58.

The square root of 1994529937 is about 44660.1605124747. The cubic root of 1994529937 is about 1258.7713598578.

The spelling of 1994529937 in words is "one billion, nine hundred ninety-four million, five hundred twenty-nine thousand, nine hundred thirty-seven".