1538836630 has 32 divisors (see below), whose sum is σ = 2821123008. Its totient is φ = 604195200.

The previous prime is 1538836601. The next prime is 1538836631. The reversal of 1538836630 is 366388351.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1538836631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 327679 + ... + 332341.

It is an arithmetic number, because the mean of its divisors is an integer number (88160094).

Almost surely, 2^1538836630 is an apocalyptic number.

1538836630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1538836630 is a deficient number, since it is larger than the sum of its proper divisors (1282286378).

1538836630 is a wasteful number, since it uses less digits than its factorization.

1538836630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5272.

The product of its (nonzero) digits is 311040, while the sum is 43.

The square root of 1538836630 is about 39228.0082339137. The cubic root of 1538836630 is about 1154.5094848100.

The spelling of 1538836630 in words is "one billion, five hundred thirty-eight million, eight hundred thirty-six thousand, six hundred thirty".