1484781993 has 6 divisors (see below), whose sum is σ = 2144685114. Its totient is φ = 989854656.

The previous prime is 1484781979. The next prime is 1484782001. The reversal of 1484781993 is 3991874841.

1484781993 is a `hidden beast` number, since 1 + 484 + 78 + 1 + 9 + 93 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1055795049 + 428986944 = 32493^2 + 20712^2 .

It is not a de Polignac number, because 1484781993 - 2⁹ = 1484781481 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1484781953) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 82487880 + ... + 82487897.

It is an arithmetic number, because the mean of its divisors is an integer number (357447519).

Almost surely, 2^1484781993 is an apocalyptic number.

It is an amenable number.

1484781993 is a deficient number, since it is larger than the sum of its proper divisors (659903121).

1484781993 is a wasteful number, since it uses less digits than its factorization.

1484781993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164975783 (or 164975780 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 54.

The square root of 1484781993 is about 38532.8689951838. The cubic root of 1484781993 is about 1140.8299058492.

The spelling of 1484781993 in words is "one billion, four hundred eighty-four million, seven hundred eighty-one thousand, nine hundred ninety-three".