1972064111 has 2 divisors, whose sum is σ = 1972064112. Its totient is φ = 1972064110.

The previous prime is 1972064099. The next prime is 1972064153. The reversal of 1972064111 is 1114602791.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1972064111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1972064161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 986032055 + 986032056.

It is an arithmetic number, because the mean of its divisors is an integer number (986032056).

Almost surely, 2^1972064111 is an apocalyptic number.

1972064111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1972064111 is an equidigital number, since it uses as much as digits as its factorization.

1972064111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 32.

The square root of 1972064111 is about 44407.9284700379. The cubic root of 1972064111 is about 1254.0273540799.

The spelling of 1972064111 in words is "one billion, nine hundred seventy-two million, sixty-four thousand, one hundred eleven".