1954118641 has 8 divisors (see below), whose sum is σ = 1999262720. Its totient is φ = 1909484928.

The previous prime is 1954118581. The next prime is 1954118653. The reversal of 1954118641 is 1468114591.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1954118641 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1954118594 and 1954118603.

It is not an unprimeable number, because it can be changed into a prime (1954118681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119841 + ... + 135166.

It is an arithmetic number, because the mean of its divisors is an integer number (249907840).

Almost surely, 2^1954118641 is an apocalyptic number.

It is an amenable number.

1954118641 is a deficient number, since it is larger than the sum of its proper divisors (45144079).

1954118641 is an equidigital number, since it uses as much as digits as its factorization.

1954118641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255183.

The product of its digits is 34560, while the sum is 40.

The square root of 1954118641 is about 44205.4141593538. The cubic root of 1954118641 is about 1250.2119408095.

The spelling of 1954118641 in words is "one billion, nine hundred fifty-four million, one hundred eighteen thousand, six hundred forty-one".