30161338 has 4 divisors (see below), whose sum is σ = 45242010. Its totient is φ = 15080668.

The previous prime is 30161333. The next prime is 30161353. The reversal of 30161338 is 83316103.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 83316103 = 13 ⋅6408931.

It can be written as a sum of positive squares in only one way, i.e., 29844369 + 316969 = 5463^2 + 563^2 .

It is not an unprimeable number, because it can be changed into a prime (30161333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7540333 + ... + 7540336.

Almost surely, 2^30161338 is an apocalyptic number.

30161338 is a deficient number, since it is larger than the sum of its proper divisors (15080672).

30161338 is a wasteful number, since it uses less digits than its factorization.

30161338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15080671.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 30161338 is about 5491.9339034624. The cubic root of 30161338 is about 311.2792713448.

The spelling of 30161338 in words is "thirty million, one hundred sixty-one thousand, three hundred thirty-eight".