1275183138 has 16 divisors (see below), whose sum is σ = 2684596320. Its totient is φ = 402689376.

The previous prime is 1275183131. The next prime is 1275183139. The reversal of 1275183138 is 8313815721.

It is a junction number, because it is equal to n+sod(n) for n = 1275183096 and 1275183105.

It is not an unprimeable number, because it can be changed into a prime (1275183131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5592795 + ... + 5593022.

It is an arithmetic number, because the mean of its divisors is an integer number (167787270).

Almost surely, 2^1275183138 is an apocalyptic number.

1275183138 is an abundant number, since it is smaller than the sum of its proper divisors (1409413182).

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

1275183138 is a wasteful number, since it uses less digits than its factorization.

1275183138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11185841.

The product of its digits is 40320, while the sum is 39.

The square root of 1275183138 is about 35709.7064955734. The cubic root of 1275183138 is about 1084.4033580361.

Adding to 1275183138 its reverse (8313815721), we get a palindrome (9588998859).

The spelling of 1275183138 in words is "one billion, two hundred seventy-five million, one hundred eighty-three thousand, one hundred thirty-eight".