1838535272 has 48 divisors (see below), whose sum is σ = 4148374500. Its totient is φ = 760768512.

The previous prime is 1838535269. The next prime is 1838535289. The reversal of 1838535272 is 2725358381.

It can be written as a sum of positive squares in 2 ways, for example, as 1834066276 + 4468996 = 42826^2 + 2114^2 .

It is a super-2 number, since 2×1838535272² = 6760423892776227968, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 69497 + ... + 92232.

Almost surely, 2^1838535272 is an apocalyptic number.

It is an amenable number.

1838535272 is an abundant number, since it is smaller than the sum of its proper divisors (2309839228).

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

1838535272 is a wasteful number, since it uses less digits than its factorization.

1838535272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161778 (or 161767 counting only the distinct ones).

The product of its digits is 403200, while the sum is 44.

The square root of 1838535272 is about 42878.1444561212. The cubic root of 1838535272 is about 1225.0598936702.

The spelling of 1838535272 in words is "one billion, eight hundred thirty-eight million, five hundred thirty-five thousand, two hundred seventy-two".