3069478138 has 4 divisors (see below), whose sum is σ = 4604217210. Its totient is φ = 1534739068.

The previous prime is 3069478123. The next prime is 3069478141. The reversal of 3069478138 is 8318749603.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2563093129 + 506385009 = 50627^2 + 22503^2 .

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 3069478091 and 3069478100.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 767369533 + ... + 767369536.

Almost surely, 2^3069478138 is an apocalyptic number.

3069478138 is a deficient number, since it is larger than the sum of its proper divisors (1534739072).

3069478138 is a wasteful number, since it uses less digits than its factorization.

3069478138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1534739071.

The product of its (nonzero) digits is 870912, while the sum is 49.

The square root of 3069478138 is about 55402.8712071856. The cubic root of 3069478138 is about 1453.2985765309.

The spelling of 3069478138 in words is "three billion, sixty-nine million, four hundred seventy-eight thousand, one hundred thirty-eight".