1954076364389 has 2 divisors, whose sum is σ = 1954076364390. Its totient is φ = 1954076364388.

The previous prime is 1954076364349. The next prime is 1954076364397. The reversal of 1954076364389 is 9834636704591.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1854886011364 + 99190353025 = 1361942^2 + 314945^2 .

It is a cyclic number.

It is not a de Polignac number, because 1954076364389 - 2²⁴ = 1954059587173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1954076364349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 977038182194 + 977038182195.

It is an arithmetic number, because the mean of its divisors is an integer number (977038182195).

Almost surely, 2^{1954076364389} is an apocalyptic number.

It is an amenable number.

1954076364389 is a deficient number, since it is larger than the sum of its proper divisors (1).

1954076364389 is an equidigital number, since it uses as much as digits as its factorization.

1954076364389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 117573120, while the sum is 65.

The spelling of 1954076364389 in words is "one trillion, nine hundred fifty-four billion, seventy-six million, three hundred sixty-four thousand, three hundred eighty-nine".