7742874394 has 4 divisors (see below), whose sum is σ = 11614311594. Its totient is φ = 3871437196.

The previous prime is 7742874389. The next prime is 7742874413. The reversal of 7742874394 is 4934782477.

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., 5840780625 + 1902093769 = 76425^2 + 43613^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1935718597 + ... + 1935718600.

Almost surely, 2^7742874394 is an apocalyptic number.

7742874394 is a deficient number, since it is larger than the sum of its proper divisors (3871437200).

7742874394 is a wasteful number, since it uses less digits than its factorization.

7742874394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3871437199.

The product of its digits is 9483264, while the sum is 55.

The square root of 7742874394 is about 87993.6042789475. The cubic root of 7742874394 is about 1978.3391161516.

The spelling of 7742874394 in words is "seven billion, seven hundred forty-two million, eight hundred seventy-four thousand, three hundred ninety-four".