1944195049 has 2 divisors, whose sum is σ = 1944195050. Its totient is φ = 1944195048.

The previous prime is 1944194999. The next prime is 1944195053. The reversal of 1944195049 is 9405914491.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1741559824 + 202635225 = 41732^2 + 14235^2 .

It is a cyclic number.

It is not a de Polignac number, because 1944195049 - 2¹¹ = 1944193001 is a prime.

It is a super-2 number, since 2×1944195049² = 7559788777112224802, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1944198049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 972097524 + 972097525.

It is an arithmetic number, because the mean of its divisors is an integer number (972097525).

Almost surely, 2^1944195049 is an apocalyptic number.

It is an amenable number.

1944195049 is a deficient number, since it is larger than the sum of its proper divisors (1).

1944195049 is an equidigital number, since it uses as much as digits as its factorization.

1944195049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 233280, while the sum is 46.

The square root of 1944195049 is about 44093.0272151958. The cubic root of 1944195049 is about 1248.0920329979.

The spelling of 1944195049 in words is "one billion, nine hundred forty-four million, one hundred ninety-five thousand, forty-nine".