7487642879 has 2 divisors, whose sum is σ = 7487642880. Its totient is φ = 7487642878.

The previous prime is 7487642807. The next prime is 7487642941. The reversal of 7487642879 is 9782467847.

It is an a-pointer prime, because the next prime (7487642941) can be obtained adding 7487642879 to its sum of digits (62).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7487642879 - 2¹² = 7487638783 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7487641879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3743821439 + 3743821440.

It is an arithmetic number, because the mean of its divisors is an integer number (3743821440).

Almost surely, 2^7487642879 is an apocalyptic number.

7487642879 is a deficient number, since it is larger than the sum of its proper divisors (1).

7487642879 is an equidigital number, since it uses as much as digits as its factorization.

7487642879 is an evil number, because the sum of its binary digits is even.

The product of its digits is 37933056, while the sum is 62.

The square root of 7487642879 is about 86531.1670960238. The cubic root of 7487642879 is about 1956.3581964485.

The spelling of 7487642879 in words is "seven billion, four hundred eighty-seven million, six hundred forty-two thousand, eight hundred seventy-nine".