2378142981 has 6 divisors (see below), whose sum is σ = 3435095430. Its totient is φ = 1585428648.

The previous prime is 2378142979. The next prime is 2378143007. The reversal of 2378142981 is 1892418732.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 2326518756 + 51624225 = 48234^2 + 7185^2 .

It is not a de Polignac number, because 2378142981 - 2¹ = 2378142979 is a prime.

It is a super-2 number, since 2×2378142981² = 11311128076159132722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2378142911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 132119046 + ... + 132119063.

It is an arithmetic number, because the mean of its divisors is an integer number (572515905).

Almost surely, 2^2378142981 is an apocalyptic number.

It is an amenable number.

2378142981 is a deficient number, since it is larger than the sum of its proper divisors (1056952449).

2378142981 is a wasteful number, since it uses less digits than its factorization.

2378142981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264238115 (or 264238112 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The square root of 2378142981 is about 48766.2073673974. The cubic root of 2378142981 is about 1334.7891077885.

The spelling of 2378142981 in words is "two billion, three hundred seventy-eight million, one hundred forty-two thousand, nine hundred eighty-one".