1930931 has 2 divisors, whose sum is σ = 1930932. Its totient is φ = 1930930.

The previous prime is 1930927. The next prime is 1930937. The reversal of 1930931 is 1390391.

It is a weak prime.

It is an emirp because it is prime and its reverse (1390391) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1930931 - 2² = 1930927 is a prime.

It is a super-2 number, since 2×1930931² = 7456989053522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1930931.

It is not a weakly prime, because it can be changed into another prime (1930937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 965465 + 965466.

It is an arithmetic number, because the mean of its divisors is an integer number (965466).

2^1930931 is an apocalyptic number.

1930931 is a deficient number, since it is larger than the sum of its proper divisors (1).

1930931 is an equidigital number, since it uses as much as digits as its factorization.

1930931 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 729, while the sum is 26.

The square root of 1930931 is about 1389.5794327781. The cubic root of 1930931 is about 124.5247231859.

The spelling of 1930931 in words is "one million, nine hundred thirty thousand, nine hundred thirty-one".