1538795646 has 12 divisors (see below), whose sum is σ = 3334057272. Its totient is φ = 512931876.

The previous prime is 1538795591. The next prime is 1538795653. The reversal of 1538795646 is 6465978351.

1538795646 is a `hidden beast` number, since 1 + 5 + 3 + 8 + 79 + 564 + 6 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1538795592 and 1538795601.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 42744306 + ... + 42744341.

It is an arithmetic number, because the mean of its divisors is an integer number (277838106).

Almost surely, 2^1538795646 is an apocalyptic number.

1538795646 is an abundant number, since it is smaller than the sum of its proper divisors (1795261626).

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

1538795646 is a wasteful number, since it uses less digits than its factorization.

1538795646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85488655 (or 85488652 counting only the distinct ones).

The product of its digits is 5443200, while the sum is 54.

The square root of 1538795646 is about 39227.4858485731. The cubic root of 1538795646 is about 1154.4992353277.

The spelling of 1538795646 in words is "one billion, five hundred thirty-eight million, seven hundred ninety-five thousand, six hundred forty-six".