1925980997 has 2 divisors, whose sum is σ = 1925980998. Its totient is φ = 1925980996.

The previous prime is 1925980967. The next prime is 1925981009. The reversal of 1925980997 is 7990895291.

It is a Cunningham number, because it is equal to 43886²+1.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1925980996 + 1 = 43886^2 + 1^2 .

It is a cyclic number.

It is not a de Polignac number, because 1925980997 - 2⁶ = 1925980933 is a prime.

It is a super-2 number, since 2×1925980997² = 7418805601610228018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1925980957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 962990498 + 962990499.

It is an arithmetic number, because the mean of its divisors is an integer number (962990499).

Almost surely, 2^1925980997 is an apocalyptic number.

It is an amenable number.

1925980997 is a deficient number, since it is larger than the sum of its proper divisors (1).

1925980997 is an equidigital number, since it uses as much as digits as its factorization.

1925980997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3674160, while the sum is 59.

The square root of 1925980997 is about 43886.0000113932. Note that the first 4 decimals coincide. The cubic root of 1925980997 is about 1244.1822443426.

The spelling of 1925980997 in words is "one billion, nine hundred twenty-five million, nine hundred eighty thousand, nine hundred ninety-seven".