1550514138 has 32 divisors (see below), whose sum is σ = 3363534720. Its totient is φ = 474570240.

The previous prime is 1550514137. The next prime is 1550514139. The reversal of 1550514138 is 8314150551.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1550514137) and next prime (1550514139).

It is a junction number, because it is equal to n+sod(n) for n = 1550514099 and 1550514108.

It is not an unprimeable number, because it can be changed into a prime (1550514131) 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, 181198 + ... + 189561.

It is an arithmetic number, because the mean of its divisors is an integer number (105110460).

Almost surely, 2^1550514138 is an apocalyptic number.

1550514138 is an abundant number, since it is smaller than the sum of its proper divisors (1813020582).

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

1550514138 is a wasteful number, since it uses less digits than its factorization.

1550514138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370822.

The product of its (nonzero) digits is 12000, while the sum is 33.

The square root of 1550514138 is about 39376.5683878116. The cubic root of 1550514138 is about 1157.4224720623.

Adding to 1550514138 its reverse (8314150551), we get a palindrome (9864664689).

The spelling of 1550514138 in words is "one billion, five hundred fifty million, five hundred fourteen thousand, one hundred thirty-eight".