1954041555 has 32 divisors (see below), whose sum is σ = 3158403840. Its totient is φ = 1031564160.

The previous prime is 1954041503. The next prime is 1954041559. The reversal of 1954041555 is 5551404591.

It is not a de Polignac number, because 1954041555 - 2³⁰ = 880299731 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1954041559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 656220 + ... + 659190.

It is an arithmetic number, because the mean of its divisors is an integer number (98700120).

Almost surely, 2^1954041555 is an apocalyptic number.

1954041555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1954041555 is a deficient number, since it is larger than the sum of its proper divisors (1204362285).

1954041555 is a wasteful number, since it uses less digits than its factorization.

1954041555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3411.

The product of its (nonzero) digits is 90000, while the sum is 39.

The square root of 1954041555 is about 44204.5422439821. The cubic root of 1954041555 is about 1250.1955011552.

The spelling of 1954041555 in words is "one billion, nine hundred fifty-four million, forty-one thousand, five hundred fifty-five".