2896421638 has 16 divisors (see below), whose sum is σ = 4764163536. Its totient is φ = 1309731840.

The previous prime is 2896421621. The next prime is 2896421639. The reversal of 2896421638 is 8361246982.

It is a junction number, because it is equal to n+sod(n) for n = 2896421591 and 2896421600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2896421639) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 336831 + ... + 345322.

It is an arithmetic number, because the mean of its divisors is an integer number (297760221).

Almost surely, 2^2896421638 is an apocalyptic number.

2896421638 is a deficient number, since it is larger than the sum of its proper divisors (1867741898).

2896421638 is a wasteful number, since it uses less digits than its factorization.

2896421638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 682359.

The product of its digits is 995328, while the sum is 49.

The square root of 2896421638 is about 53818.4135589298. The cubic root of 2896421638 is about 1425.4563656596.

The spelling of 2896421638 in words is "two billion, eight hundred ninety-six million, four hundred twenty-one thousand, six hundred thirty-eight".