1954391277001 has 2 divisors, whose sum is σ = 1954391277002. Its totient is φ = 1954391277000.

The previous prime is 1954391276941. The next prime is 1954391277103. The reversal of 1954391277001 is 1007721934591.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1121589020601 + 832802256400 = 1059051^2 + 912580^2 .

It is a cyclic number.

It is not a de Polignac number, because 1954391277001 - 2⁹ = 1954391276489 is a prime.

It is not a weakly prime, because it can be changed into another prime (1954391277701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 977195638500 + 977195638501.

It is an arithmetic number, because the mean of its divisors is an integer number (977195638501).

Almost surely, 2^{1954391277001} is an apocalyptic number.

It is an amenable number.

1954391277001 is a deficient number, since it is larger than the sum of its proper divisors (1).

1954391277001 is an equidigital number, since it uses as much as digits as its factorization.

1954391277001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 476280, while the sum is 49.

The spelling of 1954391277001 in words is "one trillion, nine hundred fifty-four billion, three hundred ninety-one million, two hundred seventy-seven thousand, one".