1554040868 has 12 divisors (see below), whose sum is σ = 2739423372. Its totient is φ = 771348480.

The previous prime is 1554040867. The next prime is 1554040871. The reversal of 1554040868 is 8680404551.

It can be written as a sum of positive squares in 2 ways, for example, as 892933924 + 661106944 = 29882^2 + 25712^2 .

It is not an unprimeable number, because it can be changed into a prime (1554040867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1417373 + ... + 1418468.

It is an arithmetic number, because the mean of its divisors is an integer number (228285281).

Almost surely, 2^1554040868 is an apocalyptic number.

It is an amenable number.

1554040868 is a deficient number, since it is larger than the sum of its proper divisors (1185382504).

1554040868 is a wasteful number, since it uses less digits than its factorization.

1554040868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2835982 (or 2835980 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 41.

The square root of 1554040868 is about 39421.3250411500. The cubic root of 1554040868 is about 1158.2993479991.

The spelling of 1554040868 in words is "one billion, five hundred fifty-four million, forty thousand, eight hundred sixty-eight".