199413738 has 20 divisors (see below), whose sum is σ = 446834850. Its totient is φ = 66471192.

The previous prime is 199413733. The next prime is 199413743. The reversal of 199413738 is 837314991.

It is an interprime number because it is at equal distance from previous prime (199413733) and next prime (199413743).

It can be written as a sum of positive squares in only one way, i.e., 136258929 + 63154809 = 11673^2 + 7947^2 .

It is a junction number, because it is equal to n+sod(n) for n = 199413693 and 199413702.

It is not an unprimeable number, because it can be changed into a prime (199413733) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 615313 + ... + 615636.

Almost surely, 2^199413738 is an apocalyptic number.

199413738 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

199413738 is an abundant number, since it is smaller than the sum of its proper divisors (247421112).

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

199413738 is a wasteful number, since it uses less digits than its factorization.

199413738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1230963 (or 1230954 counting only the distinct ones).

The product of its digits is 163296, while the sum is 45.

The square root of 199413738 is about 14121.3929199637. The cubic root of 199413738 is about 584.2315749058.

The spelling of 199413738 in words is "one hundred ninety-nine million, four hundred thirteen thousand, seven hundred thirty-eight".