1930394997 has 20 divisors (see below), whose sum is σ = 2911685920. Its totient is φ = 1274430024.

The previous prime is 1930394989. The next prime is 1930395007. The reversal of 1930394997 is 7994930391.

It is not a de Polignac number, because 1930394997 - 2³ = 1930394989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1930394497) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 107347 + ... + 124032.

It is an arithmetic number, because the mean of its divisors is an integer number (145584296).

Almost surely, 2^1930394997 is an apocalyptic number.

It is an amenable number.

1930394997 is a deficient number, since it is larger than the sum of its proper divisors (981290923).

1930394997 is a wasteful number, since it uses less digits than its factorization.

1930394997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231494 (or 231485 counting only the distinct ones).

The product of its (nonzero) digits is 1653372, while the sum is 54.

The square root of 1930394997 is about 43936.2606169437. The cubic root of 1930394997 is about 1245.1319993591.

It can be divided in two parts, 1930394 and 997, that added together give a palindrome (1931391).

The spelling of 1930394997 in words is "one billion, nine hundred thirty million, three hundred ninety-four thousand, nine hundred ninety-seven".