1976989625 has 24 divisors (see below), whose sum is σ = 2659485192. Its totient is φ = 1458607200.

The previous prime is 1976989613. The next prime is 1976989657. The reversal of 1976989625 is 5269896791.

It can be written as a sum of positive squares in 4 ways, for example, as 311451904 + 1665537721 = 17648^2 + 40811^2 .

It is not a de Polignac number, because 1976989625 - 2¹⁸ = 1976727481 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1791824 + ... + 1792926.

It is an arithmetic number, because the mean of its divisors is an integer number (110811883).

Almost surely, 2^1976989625 is an apocalyptic number.

It is an amenable number.

1976989625 is a deficient number, since it is larger than the sum of its proper divisors (682495567).

1976989625 is an frugal number, since it uses more digits than its factorization.

1976989625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2234 (or 1121 counting only the distinct ones).

The product of its digits is 14696640, while the sum is 62.

The square root of 1976989625 is about 44463.3514818665. The cubic root of 1976989625 is about 1255.0705240179.

The spelling of 1976989625 in words is "one billion, nine hundred seventy-six million, nine hundred eighty-nine thousand, six hundred twenty-five".