1932872521 has 2 divisors, whose sum is σ = 1932872522. Its totient is φ = 1932872520.

The previous prime is 1932872497. The next prime is 1932872549. The reversal of 1932872521 is 1252782391.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1048464400 + 884408121 = 32380^2 + 29739^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1932872521 is a prime.

It is not a weakly prime, because it can be changed into another prime (1932872581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 966436260 + 966436261.

It is an arithmetic number, because the mean of its divisors is an integer number (966436261).

Almost surely, 2^1932872521 is an apocalyptic number.

It is an amenable number.

1932872521 is a deficient number, since it is larger than the sum of its proper divisors (1).

1932872521 is an equidigital number, since it uses as much as digits as its factorization.

1932872521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 40.

The square root of 1932872521 is about 43964.4461013670. The cubic root of 1932872521 is about 1245.6644509438.

The spelling of 1932872521 in words is "one billion, nine hundred thirty-two million, eight hundred seventy-two thousand, five hundred twenty-one".