1954045555 has 32 divisors (see below), whose sum is σ = 2938871808. Its totient is φ = 1211683200.

The previous prime is 1954045543. The next prime is 1954045559. The reversal of 1954045555 is 5555404591.

It is a happy number.

It is not a de Polignac number, because 1954045555 - 2⁷ = 1954045427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1954045559) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 60249 + ... + 86821.

It is an arithmetic number, because the mean of its divisors is an integer number (91839744).

Almost surely, 2^1954045555 is an apocalyptic number.

1954045555 is a deficient number, since it is larger than the sum of its proper divisors (984826253).

1954045555 is a wasteful number, since it uses less digits than its factorization.

1954045555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26787.

The product of its (nonzero) digits is 450000, while the sum is 43.

The square root of 1954045555 is about 44204.5874881782. The cubic root of 1954045555 is about 1250.1963542211.

The spelling of 1954045555 in words is "one billion, nine hundred fifty-four million, forty-five thousand, five hundred fifty-five".