1552909540 has 192 divisors, whose sum is σ = 4334529024. Its totient is φ = 453353472.

The previous prime is 1552909493. The next prime is 1552909541. The reversal of 1552909540 is 459092551.

It is a junction number, because it is equal to n+sod(n) for n = 1552909493 and 1552909502.

It is not an unprimeable number, because it can be changed into a prime (1552909541) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1639347 + ... + 1640293.

It is an arithmetic number, because the mean of its divisors is an integer number (22575672).

Almost surely, 2^1552909540 is an apocalyptic number.

1552909540 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 1552909540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2167264512).

1552909540 is an abundant number, since it is smaller than the sum of its proper divisors (2781619484).

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

1552909540 is a wasteful number, since it uses less digits than its factorization.

1552909540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1046 (or 1044 counting only the distinct ones).

The product of its (nonzero) digits is 81000, while the sum is 40.

The square root of 1552909540 is about 39406.9732407857. The cubic root of 1552909540 is about 1158.0182025391.

The spelling of 1552909540 in words is "one billion, five hundred fifty-two million, nine hundred nine thousand, five hundred forty".