1929312997 has 2 divisors, whose sum is σ = 1929312998. Its totient is φ = 1929312996.

The previous prime is 1929312977. The next prime is 1929313013. The reversal of 1929312997 is 7992139291.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1536718401 + 392594596 = 39201^2 + 19814^2 .

It is a cyclic number.

It is not a de Polignac number, because 1929312997 - 2¹⁵ = 1929280229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1929312937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 964656498 + 964656499.

It is an arithmetic number, because the mean of its divisors is an integer number (964656499).

Almost surely, 2^1929312997 is an apocalyptic number.

It is an amenable number.

1929312997 is a deficient number, since it is larger than the sum of its proper divisors (1).

1929312997 is an equidigital number, since it uses as much as digits as its factorization.

1929312997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 551124, while the sum is 52.

The square root of 1929312997 is about 43923.9455991831. The cubic root of 1929312997 is about 1244.8993207942.

The spelling of 1929312997 in words is "one billion, nine hundred twenty-nine million, three hundred twelve thousand, nine hundred ninety-seven".