1448990778 has 16 divisors (see below), whose sum is σ = 2991465216. Its totient is φ = 467416320.

The previous prime is 1448990729. The next prime is 1448990779. The reversal of 1448990778 is 8770998441.

It is not an unprimeable number, because it can be changed into a prime (1448990779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3894951 + ... + 3895322.

It is an arithmetic number, because the mean of its divisors is an integer number (186966576).

Almost surely, 2^1448990778 is an apocalyptic number.

1448990778 is an abundant number, since it is smaller than the sum of its proper divisors (1542474438).

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

1448990778 is a wasteful number, since it uses less digits than its factorization.

1448990778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7790309.

The product of its (nonzero) digits is 4064256, while the sum is 57.

The square root of 1448990778 is about 38065.6114885864. The cubic root of 1448990778 is about 1131.5885398142.

The spelling of 1448990778 in words is "one billion, four hundred forty-eight million, nine hundred ninety thousand, seven hundred seventy-eight".