1485721678 has 32 divisors (see below), whose sum is σ = 2664446400. Its totient is φ = 607858944.

The previous prime is 1485721669. The next prime is 1485721709. The reversal of 1485721678 is 8761275841.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15576 + ... + 56692.

It is an arithmetic number, because the mean of its divisors is an integer number (83263950).

Almost surely, 2^1485721678 is an apocalyptic number.

1485721678 is a deficient number, since it is larger than the sum of its proper divisors (1178724722).

1485721678 is a wasteful number, since it uses less digits than its factorization.

1485721678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41244.

The product of its digits is 752640, while the sum is 49.

The square root of 1485721678 is about 38545.0603579758. The cubic root of 1485721678 is about 1141.0705235924.

The spelling of 1485721678 in words is "one billion, four hundred eighty-five million, seven hundred twenty-one thousand, six hundred seventy-eight".