1944195051 has 16 divisors (see below), whose sum is σ = 2610890496. Its totient is φ = 1286832096.

The previous prime is 1944195049. The next prime is 1944195053. The reversal of 1944195051 is 1505914491.

It is an interprime number because it is at equal distance from previous prime (1944195049) and next prime (1944195053).

It is not a de Polignac number, because 1944195051 - 2¹ = 1944195049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1944195053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 728746 + ... + 731408.

It is an arithmetic number, because the mean of its divisors is an integer number (163180656).

Almost surely, 2^1944195051 is an apocalyptic number.

1944195051 is a deficient number, since it is larger than the sum of its proper divisors (666695445).

1944195051 is a wasteful number, since it uses less digits than its factorization.

1944195051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4322.

The product of its (nonzero) digits is 32400, while the sum is 39.

The square root of 1944195051 is about 44093.0272378752. The cubic root of 1944195051 is about 1248.0920334259.

The spelling of 1944195051 in words is "one billion, nine hundred forty-four million, one hundred ninety-five thousand, fifty-one".