2139297274 has 4 divisors (see below), whose sum is σ = 3208945914. Its totient is φ = 1069648636.

The previous prime is 2139297263. The next prime is 2139297287. The reversal of 2139297274 is 4727929312.

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., 1235874025 + 903423249 = 35155^2 + 30057^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 534824317 + ... + 534824320.

Almost surely, 2^2139297274 is an apocalyptic number.

2139297274 is a deficient number, since it is larger than the sum of its proper divisors (1069648640).

2139297274 is a wasteful number, since it uses less digits than its factorization.

2139297274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1069648639.

The product of its digits is 381024, while the sum is 46.

The square root of 2139297274 is about 46252.5380276585. The cubic root of 2139297274 is about 1288.5176719588.

The spelling of 2139297274 in words is "two billion, one hundred thirty-nine million, two hundred ninety-seven thousand, two hundred seventy-four".