1930997069 has 2 divisors, whose sum is σ = 1930997070. Its totient is φ = 1930997068.

The previous prime is 1930997023. The next prime is 1930997077. The reversal of 1930997069 is 9607990391.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1133668900 + 797328169 = 33670^2 + 28237^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1930997069 is a prime.

It is a super-2 number, since 2×1930997069² = 7457499360973181522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1930997069.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1930997009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 965498534 + 965498535.

It is an arithmetic number, because the mean of its divisors is an integer number (965498535).

Almost surely, 2^1930997069 is an apocalyptic number.

It is an amenable number.

1930997069 is a deficient number, since it is larger than the sum of its proper divisors (1).

1930997069 is an equidigital number, since it uses as much as digits as its factorization.

1930997069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 826686, while the sum is 53.

The square root of 1930997069 is about 43943.1117355155. Note that the first 3 decimals coincide. The cubic root of 1930997069 is about 1245.2614342141.

The spelling of 1930997069 in words is "one billion, nine hundred thirty million, nine hundred ninety-seven thousand, sixty-nine".