1954880856 has 48 divisors (see below), whose sum is σ = 5346909360. Its totient is φ = 645172800.

The previous prime is 1954880839. The next prime is 1954880857. The reversal of 1954880856 is 6580884591.

It is a happy number.

1954880856 is a `hidden beast` number, since 19 + 548 + 8 + 0 + 85 + 6 = 666.

It is a super-2 number, since 2×1954880856² = 7643118322310585472, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1954880857) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 127140 + ... + 141683.

It is an arithmetic number, because the mean of its divisors is an integer number (111393945).

Almost surely, 2^1954880856 is an apocalyptic number.

It is an amenable number.

1954880856 is an abundant number, since it is smaller than the sum of its proper divisors (3392028504).

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

1954880856 is a wasteful number, since it uses less digits than its factorization.

1954880856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268936 (or 268929 counting only the distinct ones).

The product of its (nonzero) digits is 2764800, while the sum is 54.

The square root of 1954880856 is about 44214.0346044104. The cubic root of 1954880856 is about 1250.3744704197.

The spelling of 1954880856 in words is "one billion, nine hundred fifty-four million, eight hundred eighty thousand, eight hundred fifty-six".