1550137530 has 64 divisors (see below), whose sum is σ = 3813879168. Its totient is φ = 403011840.

The previous prime is 1550137529. The next prime is 1550137543. The reversal of 1550137530 is 357310551.

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1213252 + ... + 1214528.

It is an arithmetic number, because the mean of its divisors is an integer number (59591862).

Almost surely, 2^1550137530 is an apocalyptic number.

1550137530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1550137530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1906939584).

1550137530 is an abundant number, since it is smaller than the sum of its proper divisors (2263741638).

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

1550137530 is a wasteful number, since it uses less digits than its factorization.

1550137530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2271.

The product of its (nonzero) digits is 7875, while the sum is 30.

The square root of 1550137530 is about 39371.7859640631. The cubic root of 1550137530 is about 1157.3287547918.

The spelling of 1550137530 in words is "one billion, five hundred fifty million, one hundred thirty-seven thousand, five hundred thirty".