1972103634 has 12 divisors (see below), whose sum is σ = 4272891246. Its totient is φ = 657367872.

The previous prime is 1972103633. The next prime is 1972103647. The reversal of 1972103634 is 4363012791.

1972103634 is a `hidden beast` number, since 1 + 9 + 7 + 2 + 10 + 3 + 634 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1971093609 + 1010025 = 44397^2 + 1005^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1972103633) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 54780639 + ... + 54780674.

Almost surely, 2^1972103634 is an apocalyptic number.

1972103634 is an abundant number, since it is smaller than the sum of its proper divisors (2300787612).

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

1972103634 is a wasteful number, since it uses less digits than its factorization.

1972103634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109561321 (or 109561318 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 1972103634 is about 44408.3734671740. The cubic root of 1972103634 is about 1254.0357315277.

The spelling of 1972103634 in words is "one billion, nine hundred seventy-two million, one hundred three thousand, six hundred thirty-four".