1550000408 has 64 divisors (see below), whose sum is σ = 3259660320. Its totient is φ = 684851200.

The previous prime is 1550000401. The next prime is 1550000437. The reversal of 1550000408 is 8040000551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1550000401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1273016 + ... + 1274232.

Almost surely, 2^1550000408 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1550000408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1629830160).

1550000408 is an abundant number, since it is smaller than the sum of its proper divisors (1709659912).

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

1550000408 is a wasteful number, since it uses less digits than its factorization.

1550000408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1628 (or 1624 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 1550000408 is about 39370.0445516639. The cubic root of 1550000408 is about 1157.2946288062.

Adding to 1550000408 its reverse (8040000551), we get a palindrome (9590000959).

The spelling of 1550000408 in words is "one billion, five hundred fifty million, four hundred eight", and thus it is an aban number.