1900788873497 has 2 divisors, whose sum is σ = 1900788873498. Its totient is φ = 1900788873496.

The previous prime is 1900788873469. The next prime is 1900788873527. The reversal of 1900788873497 is 7943788870091.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1900788873481 + 16 = 1378691^2 + 4^2 .

It is a cyclic number.

It is not a de Polignac number, because 1900788873497 - 2⁶ = 1900788873433 is a prime.

It is a super-2 number, since 2×1900788873497² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1900788873497.

It is not a weakly prime, because it can be changed into another prime (1900788873437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 950394436748 + 950394436749.

It is an arithmetic number, because the mean of its divisors is an integer number (950394436749).

Almost surely, 2^{1900788873497} is an apocalyptic number.

It is an amenable number.

1900788873497 is a deficient number, since it is larger than the sum of its proper divisors (1).

1900788873497 is an equidigital number, since it uses as much as digits as its factorization.

1900788873497 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 170698752, while the sum is 71.

The spelling of 1900788873497 in words is "one trillion, nine hundred billion, seven hundred eighty-eight million, eight hundred seventy-three thousand, four hundred ninety-seven".