7874386402 has 4 divisors (see below), whose sum is σ = 11811579606. Its totient is φ = 3937193200.

The previous prime is 7874386381. The next prime is 7874386409. The reversal of 7874386402 is 2046834787.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2046834787 = 43 ⋅47600809.

It can be written as a sum of positive squares in only one way, i.e., 7851909321 + 22477081 = 88611^2 + 4741^2 .

It is a super-3 number, since 3×7874386402³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (7874386409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1968596599 + ... + 1968596602.

Almost surely, 2^7874386402 is an apocalyptic number.

7874386402 is a deficient number, since it is larger than the sum of its proper divisors (3937193204).

7874386402 is a wasteful number, since it uses less digits than its factorization.

7874386402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3937193203.

The product of its (nonzero) digits is 1806336, while the sum is 49.

The square root of 7874386402 is about 88737.7394460778. The cubic root of 7874386402 is about 1989.4769297691.

The spelling of 7874386402 in words is "seven billion, eight hundred seventy-four million, three hundred eighty-six thousand, four hundred two".