7645716154 has 4 divisors (see below), whose sum is σ = 11468574234. Its totient is φ = 3822858076.

The previous prime is 7645716151. The next prime is 7645716173. The reversal of 7645716154 is 4516175467.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4516175467 = 16073 ⋅280979.

It can be written as a sum of positive squares in only one way, i.e., 5401515025 + 2244201129 = 73495^2 + 47373^2 .

It is not an unprimeable number, because it can be changed into a prime (7645716151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1911429037 + ... + 1911429040.

Almost surely, 2^7645716154 is an apocalyptic number.

7645716154 is a deficient number, since it is larger than the sum of its proper divisors (3822858080).

7645716154 is a wasteful number, since it uses less digits than its factorization.

7645716154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3822858079.

The product of its digits is 705600, while the sum is 46.

The square root of 7645716154 is about 87439.7858757671. The cubic root of 7645716154 is about 1970.0294733065.

The spelling of 7645716154 in words is "seven billion, six hundred forty-five million, seven hundred sixteen thousand, one hundred fifty-four".