1954689904 has 40 divisors (see below), whose sum is σ = 3989762000. Its totient is φ = 925157376.

The previous prime is 1954689901. The next prime is 1954689931. The reversal of 1954689904 is 4099864591.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1954689901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 615232 + ... + 618400.

It is an arithmetic number, because the mean of its divisors is an integer number (99744050).

Almost surely, 2^1954689904 is an apocalyptic number.

It is an amenable number.

1954689904 is an abundant number, since it is smaller than the sum of its proper divisors (2035072096).

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

1954689904 is a wasteful number, since it uses less digits than its factorization.

1954689904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5225 (or 5219 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 55.

The square root of 1954689904 is about 44211.8751468426. The cubic root of 1954689904 is about 1250.3337570637. Note that the first 3 decimals are identical.

The spelling of 1954689904 in words is "one billion, nine hundred fifty-four million, six hundred eighty-nine thousand, nine hundred four".