1923400697 has 2 divisors, whose sum is σ = 1923400698. Its totient is φ = 1923400696.

The previous prime is 1923400657. The next prime is 1923400741. The reversal of 1923400697 is 7960043291.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1882171456 + 41229241 = 43384^2 + 6421^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1923400697 is a prime.

It is not a weakly prime, because it can be changed into another prime (1923400657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 961700348 + 961700349.

It is an arithmetic number, because the mean of its divisors is an integer number (961700349).

Almost surely, 2^1923400697 is an apocalyptic number.

It is an amenable number.

1923400697 is a deficient number, since it is larger than the sum of its proper divisors (1).

1923400697 is an equidigital number, since it uses as much as digits as its factorization.

1923400697 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81648, while the sum is 41.

The square root of 1923400697 is about 43856.5924006870. The cubic root of 1923400697 is about 1243.6263720894.

The spelling of 1923400697 in words is "one billion, nine hundred twenty-three million, four hundred thousand, six hundred ninety-seven".