1971472705 has 8 divisors (see below), whose sum is σ = 2368319400. Its totient is φ = 1575476736.

The previous prime is 1971472703. The next prime is 1971472709. The reversal of 1971472705 is 5072741791.

It can be written as a sum of positive squares in 4 ways, for example, as 21455424 + 1950017281 = 4632^2 + 44159^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1971472705 - 2¹ = 1971472703 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1971472703) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 207570 + ... + 216859.

It is an arithmetic number, because the mean of its divisors is an integer number (296039925).

Almost surely, 2^1971472705 is an apocalyptic number.

It is an amenable number.

1971472705 is a deficient number, since it is larger than the sum of its proper divisors (396846695).

1971472705 is an equidigital number, since it uses as much as digits as its factorization.

1971472705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425363.

The product of its (nonzero) digits is 123480, while the sum is 43.

The square root of 1971472705 is about 44401.2691823105. The cubic root of 1971472705 is about 1253.9019840093.

The spelling of 1971472705 in words is "one billion, nine hundred seventy-one million, four hundred seventy-two thousand, seven hundred five".