2642645147 has 4 divisors (see below), whose sum is σ = 2668302000. Its totient is φ = 2616988296.

The previous prime is 2642645143. The next prime is 2642645167. The reversal of 2642645147 is 7415462462.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2642645147 - 2² = 2642645143 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2642645143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12828272 + ... + 12828477.

It is an arithmetic number, because the mean of its divisors is an integer number (667075500).

Almost surely, 2^2642645147 is an apocalyptic number.

2642645147 is a deficient number, since it is larger than the sum of its proper divisors (25656853).

2642645147 is a wasteful number, since it uses less digits than its factorization.

2642645147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25656852.

The product of its digits is 322560, while the sum is 41.

The square root of 2642645147 is about 51406.6644220377. The cubic root of 2642645147 is about 1382.5460849862.

The spelling of 2642645147 in words is "two billion, six hundred forty-two million, six hundred forty-five thousand, one hundred forty-seven".