1974977704919 has 2 divisors, whose sum is σ = 1974977704920. Its totient is φ = 1974977704918.

The previous prime is 1974977704877. The next prime is 1974977704927. The reversal of 1974977704919 is 9194077794791.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1974977704919 is a prime.

It is a super-2 number, since 2×1974977704919² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1974977704019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 987488852459 + 987488852460.

It is an arithmetic number, because the mean of its divisors is an integer number (987488852460).

Almost surely, 2^{1974977704919} is an apocalyptic number.

1974977704919 is a deficient number, since it is larger than the sum of its proper divisors (1).

1974977704919 is an equidigital number, since it uses as much as digits as its factorization.

1974977704919 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 252047376, while the sum is 74.

The spelling of 1974977704919 in words is "one trillion, nine hundred seventy-four billion, nine hundred seventy-seven million, seven hundred four thousand, nine hundred nineteen".