1972249695 has 64 divisors (see below), whose sum is σ = 3790496640. Its totient is φ = 967209984.

The previous prime is 1972249639. The next prime is 1972249711. The reversal of 1972249695 is 5969422791.

It is not a de Polignac number, because 1972249695 - 2¹⁵ = 1972216927 is a prime.

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 63 ways as a sum of consecutive naturals, for example, 484107 + ... + 488163.

It is an arithmetic number, because the mean of its divisors is an integer number (59226510).

Almost surely, 2^1972249695 is an apocalyptic number.

1972249695 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1972249695 is a deficient number, since it is larger than the sum of its proper divisors (1818246945).

1972249695 is a wasteful number, since it uses less digits than its factorization.

1972249695 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4361 (or 4355 counting only the distinct ones).

The product of its digits is 2449440, while the sum is 54.

The square root of 1972249695 is about 44410.0179576636. The cubic root of 1972249695 is about 1254.0666902102.

The spelling of 1972249695 in words is "one billion, nine hundred seventy-two million, two hundred forty-nine thousand, six hundred ninety-five".