1550840620 has 24 divisors (see below), whose sum is σ = 3722017824. Its totient is φ = 531716736.

The previous prime is 1550840611. The next prime is 1550840651. The reversal of 1550840620 is 260480551.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5538577 + ... + 5538856.

It is an arithmetic number, because the mean of its divisors is an integer number (155084076).

Almost surely, 2^1550840620 is an apocalyptic number.

1550840620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1550840620 is an abundant number, since it is smaller than the sum of its proper divisors (2171177204).

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

1550840620 is a wasteful number, since it uses less digits than its factorization.

1550840620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11077449 (or 11077447 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 31.

The square root of 1550840620 is about 39380.7138076496. The cubic root of 1550840620 is about 1157.5037034154.

The spelling of 1550840620 in words is "one billion, five hundred fifty million, eight hundred forty thousand, six hundred twenty".