2642157722 has 8 divisors (see below), whose sum is σ = 3973121172. Its totient is φ = 1317784000.

The previous prime is 2642157709. The next prime is 2642157737. The reversal of 2642157722 is 2277512462.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1940490601 + 701667121 = 44051^2 + 26489^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1646429 + ... + 1648032.

Almost surely, 2^2642157722 is an apocalyptic number.

2642157722 is a deficient number, since it is larger than the sum of its proper divisors (1330963450).

2642157722 is a wasteful number, since it uses less digits than its factorization.

2642157722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3294864.

The product of its digits is 94080, while the sum is 38.

The square root of 2642157722 is about 51401.9233297743. The cubic root of 2642157722 is about 1382.4610781182.

The spelling of 2642157722 in words is "two billion, six hundred forty-two million, one hundred fifty-seven thousand, seven hundred twenty-two".