7918742377 has 16 divisors (see below), whose sum is σ = 9750267520. Its totient is φ = 6262728192.

The previous prime is 7918742371. The next prime is 7918742387. The reversal of 7918742377 is 7732478197.

It is a de Polignac number, because none of the positive numbers 2^k-7918742377 is a prime.

It is a super-2 number, since 2×7918742377² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7918742371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 213913 + ... + 248185.

It is an arithmetic number, because the mean of its divisors is an integer number (609391720).

Almost surely, 2^7918742377 is an apocalyptic number.

It is an amenable number.

7918742377 is a deficient number, since it is larger than the sum of its proper divisors (1831525143).

7918742377 is a wasteful number, since it uses less digits than its factorization.

7918742377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36832.

The product of its digits is 4148928, while the sum is 55.

The square root of 7918742377 is about 88987.3158208517. The cubic root of 7918742377 is about 1993.2054747695.

The spelling of 7918742377 in words is "seven billion, nine hundred eighteen million, seven hundred forty-two thousand, three hundred seventy-seven".