7738408690 has 16 divisors (see below), whose sum is σ = 13938308928. Its totient is φ = 3093324976.

The previous prime is 7738408663. The next prime is 7738408747. The reversal of 7738408690 is 968048377.

It is a happy number.

It is a super-2 number, since 2×7738408690² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 238822 + ... + 269281.

It is an arithmetic number, because the mean of its divisors is an integer number (871144308).

Almost surely, 2^7738408690 is an apocalyptic number.

7738408690 is a deficient number, since it is larger than the sum of its proper divisors (6199900238).

7738408690 is a wasteful number, since it uses less digits than its factorization.

7738408690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509633.

The product of its (nonzero) digits is 2032128, while the sum is 52.

The square root of 7738408690 is about 87968.2254566954. The cubic root of 7738408690 is about 1977.9587072119.

The spelling of 7738408690 in words is "seven billion, seven hundred thirty-eight million, four hundred eight thousand, six hundred ninety".