2938778131 has 12 divisors (see below), whose sum is σ = 2981950552. Its totient is φ = 2896210944.

The previous prime is 2938778123. The next prime is 2938778147. The reversal of 2938778131 is 1318778392.

It is a happy number.

It is not a de Polignac number, because 2938778131 - 2³ = 2938778123 is a prime.

It is a super-2 number, since 2×2938778131² = 17272833806487706322, which contains 22 as substring.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2938775131) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4570096 + ... + 4570738.

Almost surely, 2^2938778131 is an apocalyptic number.

2938778131 is a deficient number, since it is larger than the sum of its proper divisors (43172421).

2938778131 is an frugal number, since it uses more digits than its factorization.

2938778131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1398 (or 1309 counting only the distinct ones).

The product of its digits is 508032, while the sum is 49.

The square root of 2938778131 is about 54210.4983467225. The cubic root of 2938778131 is about 1432.3712643566.

The spelling of 2938778131 in words is "two billion, nine hundred thirty-eight million, seven hundred seventy-eight thousand, one hundred thirty-one".