1947057012 has 18 divisors (see below), whose sum is σ = 4921727538. Its totient is φ = 649018992.

The previous prime is 1947056999. The next prime is 1947057037. The reversal of 1947057012 is 2107507491.

It is a happy number.

1947057012 is a `hidden beast` number, since 1 + 9 + 4 + 70 + 570 + 12 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1921594896 + 25462116 = 43836^2 + 5046^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 54084917 = 1947057012 / (1 + 9 + 4 + 7 + 0 + 5 + 7 + 0 + 1 + 2).

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, 27042423 + ... + 27042494.

Almost surely, 2^1947057012 is an apocalyptic number.

1947057012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1947057012 is an abundant number, since it is smaller than the sum of its proper divisors (2974670526).

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

1947057012 is a wasteful number, since it uses less digits than its factorization.

1947057012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54084927 (or 54084922 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 36.

The square root of 1947057012 is about 44125.4689720121. The cubic root of 1947057012 is about 1248.7041529820.

The spelling of 1947057012 in words is "one billion, nine hundred forty-seven million, fifty-seven thousand, twelve".