1944446406 has 32 divisors (see below), whose sum is σ = 4451117568. Its totient is φ = 554722560.

The previous prime is 1944446363. The next prime is 1944446419. The reversal of 1944446406 is 6046444491.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

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, 6130 + ... + 62661.

It is an arithmetic number, because the mean of its divisors is an integer number (139097424).

Almost surely, 2^1944446406 is an apocalyptic number.

1944446406 is an abundant number, since it is smaller than the sum of its proper divisors (2506671162).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1944446406 is a wasteful number, since it uses less digits than its factorization.

1944446406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69476.

The product of its (nonzero) digits is 331776, while the sum is 42.

The square root of 1944446406 is about 44095.8774263536. The cubic root of 1944446406 is about 1248.1458175793.

The spelling of 1944446406 in words is "one billion, nine hundred forty-four million, four hundred forty-six thousand, four hundred six".