1441649978 has 16 divisors (see below), whose sum is σ = 2239008000. Its totient is φ = 695455200.

The previous prime is 1441649971. The next prime is 1441649983. The reversal of 1441649978 is 8799461441.

It is not an unprimeable number, because it can be changed into a prime (1441649971) 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 7 ways as a sum of consecutive naturals, for example, 14603 + ... + 55646.

It is an arithmetic number, because the mean of its divisors is an integer number (139938000).

Almost surely, 2^1441649978 is an apocalyptic number.

1441649978 is a deficient number, since it is larger than the sum of its proper divisors (797358022).

1441649978 is a wasteful number, since it uses less digits than its factorization.

1441649978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70613.

The product of its digits is 1741824, while the sum is 53.

The square root of 1441649978 is about 37969.0660669972. The cubic root of 1441649978 is about 1129.6743724598.

The spelling of 1441649978 in words is "one billion, four hundred forty-one million, six hundred forty-nine thousand, nine hundred seventy-eight".