1972388605 has 16 divisors (see below), whose sum is σ = 2636976384. Its totient is φ = 1403942080.

The previous prime is 1972388597. The next prime is 1972388611. The reversal of 1972388605 is 5068832791.

It is not a de Polignac number, because 1972388605 - 2³ = 1972388597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 378922 + ... + 384091.

It is an arithmetic number, because the mean of its divisors is an integer number (164811024).

Almost surely, 2^1972388605 is an apocalyptic number.

It is an amenable number.

1972388605 is a deficient number, since it is larger than the sum of its proper divisors (664587779).

1972388605 is a wasteful number, since it uses less digits than its factorization.

1972388605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 763076.

The product of its (nonzero) digits is 725760, while the sum is 49.

The square root of 1972388605 is about 44411.5818790549. The cubic root of 1972388605 is about 1254.0961317687.

The spelling of 1972388605 in words is "one billion, nine hundred seventy-two million, three hundred eighty-eight thousand, six hundred five".