1930997641 has 2 divisors, whose sum is σ = 1930997642. Its totient is φ = 1930997640.

The previous prime is 1930997611. The next prime is 1930997671. The reversal of 1930997641 is 1467990391.

It is a balanced prime because it is at equal distance from previous prime (1930997611) and next prime (1930997671).

It can be written as a sum of positive squares in only one way, i.e., 987279241 + 943718400 = 31421^2 + 30720^2 .

It is a cyclic number.

It is not a de Polignac number, because 1930997641 - 2⁹ = 1930997129 is a prime.

It is a super-3 number, since 3×1930997641³ (a number of 29 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (1930997611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 965498820 + 965498821.

It is an arithmetic number, because the mean of its divisors is an integer number (965498821).

Almost surely, 2^1930997641 is an apocalyptic number.

It is an amenable number.

1930997641 is a deficient number, since it is larger than the sum of its proper divisors (1).

1930997641 is an equidigital number, since it uses as much as digits as its factorization.

1930997641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 367416, while the sum is 49.

The square root of 1930997641 is about 43943.1182439298. The cubic root of 1930997641 is about 1245.2615571712.

The spelling of 1930997641 in words is "one billion, nine hundred thirty million, nine hundred ninety-seven thousand, six hundred forty-one".