7948787542 has 4 divisors (see below), whose sum is σ = 11923181316. Its totient is φ = 3974393770.

The previous prime is 7948787513. The next prime is 7948787549. The reversal of 7948787542 is 2457878497.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7948787549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1987196884 + ... + 1987196887.

It is an arithmetic number, because the mean of its divisors is an integer number (2980795329).

Almost surely, 2^7948787542 is an apocalyptic number.

7948787542 is a deficient number, since it is larger than the sum of its proper divisors (3974393774).

7948787542 is a wasteful number, since it uses less digits than its factorization.

7948787542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3974393773.

The product of its digits is 31610880, while the sum is 61.

The square root of 7948787542 is about 89155.9731145368. The cubic root of 7948787542 is about 1995.7231559884.

The spelling of 7948787542 in words is "seven billion, nine hundred forty-eight million, seven hundred eighty-seven thousand, five hundred forty-two".