1755625138 has 16 divisors (see below), whose sum is σ = 2648696760. Its totient is φ = 872741376.

The previous prime is 1755625133. The next prime is 1755625147. The reversal of 1755625138 is 8315265571.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 761925609 + 993699529 = 27603^2 + 31523^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1755625094 and 1755625103.

It is not an unprimeable number, because it can be changed into a prime (1755625133) 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, 252606 + ... + 259462.

Almost surely, 2^1755625138 is an apocalyptic number.

1755625138 is a deficient number, since it is larger than the sum of its proper divisors (893071622).

1755625138 is a wasteful number, since it uses less digits than its factorization.

1755625138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7581.

The product of its digits is 252000, while the sum is 43.

The square root of 1755625138 is about 41900.1806440020. The cubic root of 1755625138 is about 1206.3609304301.

The spelling of 1755625138 in words is "one billion, seven hundred fifty-five million, six hundred twenty-five thousand, one hundred thirty-eight".