1954894059139 has 8 divisors (see below), whose sum is σ = 2234191684608. Its totient is φ = 1675603195080.

The previous prime is 1954894059137. The next prime is 1954894059191. The reversal of 1954894059139 is 9319504984591.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1954894059139 - 2¹ = 1954894059137 is a prime.

It is a super-2 number, since 2×1954894059139² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1954894059137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1054867 + ... + 2241100.

It is an arithmetic number, because the mean of its divisors is an integer number (279273960576).

Almost surely, 2^{1954894059139} is an apocalyptic number.

1954894059139 is a deficient number, since it is larger than the sum of its proper divisors (279297625469).

1954894059139 is an equidigital number, since it uses as much as digits as its factorization.

1954894059139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3380705.

The product of its (nonzero) digits is 62985600, while the sum is 67.

The spelling of 1954894059139 in words is "one trillion, nine hundred fifty-four billion, eight hundred ninety-four million, fifty-nine thousand, one hundred thirty-nine".