1547072813 has 24 divisors (see below), whose sum is σ = 1854952416. Its totient is φ = 1278763200.

The previous prime is 1547072801. The next prime is 1547072869. The reversal of 1547072813 is 3182707451.

It is not a de Polignac number, because 1547072813 - 2⁴ = 1547072797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1547072213) 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 23 ways as a sum of consecutive naturals, for example, 118343 + ... + 130763.

It is an arithmetic number, because the mean of its divisors is an integer number (77289684).

Almost surely, 2^1547072813 is an apocalyptic number.

1547072813 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1547072813 is a deficient number, since it is larger than the sum of its proper divisors (307879603).

1547072813 is a wasteful number, since it uses less digits than its factorization.

1547072813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12525 (or 12512 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 38.

The square root of 1547072813 is about 39332.8464899249. The cubic root of 1547072813 is about 1156.5655482845.

The spelling of 1547072813 in words is "one billion, five hundred forty-seven million, seventy-two thousand, eight hundred thirteen".