1954115568 has 90 divisors (see below), whose sum is σ = 5553488304. Its totient is φ = 641437632.

The previous prime is 1954115567. The next prime is 1954115573. The reversal of 1954115568 is 8655114591.

1954115568 is a `hidden beast` number, since 1 + 95 + 4 + 1 + 1 + 556 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1954115561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 644905 + ... + 647927.

Almost surely, 2^1954115568 is an apocalyptic number.

1954115568 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1954115568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2776744152).

1954115568 is an abundant number, since it is smaller than the sum of its proper divisors (3599372736).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1954115568 is a wasteful number, since it uses less digits than its factorization.

1954115568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3171 (or 3095 counting only the distinct ones).

The product of its digits is 216000, while the sum is 45.

The square root of 1954115568 is about 44205.3794011543. The cubic root of 1954115568 is about 1250.2112854581.

The spelling of 1954115568 in words is "one billion, nine hundred fifty-four million, one hundred fifteen thousand, five hundred sixty-eight".