1238206156 has 48 divisors (see below), whose sum is σ = 2502339840. Its totient is φ = 530752320.

The previous prime is 1238206139. The next prime is 1238206171. The reversal of 1238206156 is 6516028321.

It is a super-3 number, since 3×1238206156³ (a number of 28 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43585 + ... + 66151.

It is an arithmetic number, because the mean of its divisors is an integer number (52132080).

Almost surely, 2^1238206156 is an apocalyptic number.

It is an amenable number.

1238206156 is an abundant number, since it is smaller than the sum of its proper divisors (1264133684).

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

1238206156 is a wasteful number, since it uses less digits than its factorization.

1238206156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22654 (or 22652 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 1238206156 is about 35188.1536315846. The cubic root of 1238206156 is about 1073.8187583062.

The spelling of 1238206156 in words is "one billion, two hundred thirty-eight million, two hundred six thousand, one hundred fifty-six".