1138629652 has 6 divisors (see below), whose sum is σ = 1992601898. Its totient is φ = 569314824.

The previous prime is 1138629589. The next prime is 1138629673. The reversal of 1138629652 is 2569268311.

It can be written as a sum of positive squares in only one way, i.e., 1015951876 + 122677776 = 31874^2 + 11076^2 .

It is a super-2 number, since 2×1138629652² = 2592954968827282208, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1138629599 and 1138629608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142328703 + ... + 142328710.

Almost surely, 2^1138629652 is an apocalyptic number.

It is an amenable number.

1138629652 is a deficient number, since it is larger than the sum of its proper divisors (853972246).

1138629652 is a wasteful number, since it uses less digits than its factorization.

1138629652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284657417 (or 284657415 counting only the distinct ones).

The product of its digits is 155520, while the sum is 43.

The square root of 1138629652 is about 33743.5868277218. The cubic root of 1138629652 is about 1044.2251842222.

The spelling of 1138629652 in words is "one billion, one hundred thirty-eight million, six hundred twenty-nine thousand, six hundred fifty-two".