1554104640 has 336 divisors, whose sum is σ = 5749966656. Its totient is φ = 354140160.

The previous prime is 1554104633. The next prime is 1554104659. The reversal of 1554104640 is 464014551.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 1554104598 and 1554104607.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 1974327 + ... + 1975113.

It is an arithmetic number, because the mean of its divisors is an integer number (17112996).

Almost surely, 2^1554104640 is an apocalyptic number.

1554104640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1554104640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2874983328).

1554104640 is an abundant number, since it is smaller than the sum of its proper divisors (4195862016).

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

1554104640 is a wasteful number, since it uses less digits than its factorization.

1554104640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 846 (or 825 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 1554104640 is about 39422.1338844056. The cubic root of 1554104640 is about 1158.3151918672.

The spelling of 1554104640 in words is "one billion, five hundred fifty-four million, one hundred four thousand, six hundred forty".