1138827572 has 12 divisors (see below), whose sum is σ = 1999237380. Its totient is φ = 567616896.

The previous prime is 1138827553. The next prime is 1138827587. The reversal of 1138827572 is 2757288311.

It can be written as a sum of positive squares in 2 ways, for example, as 216855076 + 921972496 = 14726^2 + 30364^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 447797 + ... + 450332.

It is an arithmetic number, because the mean of its divisors is an integer number (166603115).

Almost surely, 2^1138827572 is an apocalyptic number.

It is an amenable number.

1138827572 is a deficient number, since it is larger than the sum of its proper divisors (860409808).

1138827572 is a wasteful number, since it uses less digits than its factorization.

1138827572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 898450 (or 898448 counting only the distinct ones).

The product of its digits is 188160, while the sum is 44.

The square root of 1138827572 is about 33746.5194057106. The cubic root of 1138827572 is about 1044.2856841616.

The spelling of 1138827572 in words is "one billion, one hundred thirty-eight million, eight hundred twenty-seven thousand, five hundred seventy-two".