1974149284397 has 2 divisors, whose sum is σ = 1974149284398. Its totient is φ = 1974149284396.

The previous prime is 1974149284391. The next prime is 1974149284439. The reversal of 1974149284397 is 7934829414791.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1402883900356 + 571265384041 = 1184434^2 + 755821^2 .

It is a cyclic number.

It is not a de Polignac number, because 1974149284397 - 2²⁴ = 1974132507181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1974149284391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 987074642198 + 987074642199.

It is an arithmetic number, because the mean of its divisors is an integer number (987074642199).

Almost surely, 2^{1974149284397} is an apocalyptic number.

It is an amenable number.

1974149284397 is a deficient number, since it is larger than the sum of its proper divisors (1).

1974149284397 is an equidigital number, since it uses as much as digits as its factorization.

1974149284397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 109734912, while the sum is 68.

The spelling of 1974149284397 in words is "one trillion, nine hundred seventy-four billion, one hundred forty-nine million, two hundred eighty-four thousand, three hundred ninety-seven".