1481364639 has 8 divisors (see below), whose sum is σ = 2194614320. Its totient is φ = 987576408.

The previous prime is 1481364623. The next prime is 1481364641. The reversal of 1481364639 is 9364631841.

1481364639 is a `hidden beast` number, since 1 + 4 + 8 + 1 + 3 + 6 + 4 + 639 = 666.

It is not a de Polignac number, because 1481364639 - 2⁴ = 1481364623 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1481364594 and 1481364603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1481364679) 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, 27432652 + ... + 27432705.

It is an arithmetic number, because the mean of its divisors is an integer number (274326790).

Almost surely, 2^1481364639 is an apocalyptic number.

1481364639 is a deficient number, since it is larger than the sum of its proper divisors (713249681).

1481364639 is an equidigital number, since it uses as much as digits as its factorization.

1481364639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54865366 (or 54865360 counting only the distinct ones).

The product of its digits is 373248, while the sum is 45.

The square root of 1481364639 is about 38488.5000876885. The cubic root of 1481364639 is about 1139.9539939883.

The spelling of 1481364639 in words is "one billion, four hundred eighty-one million, three hundred sixty-four thousand, six hundred thirty-nine".