2051617628 has 6 divisors (see below), whose sum is σ = 3590330856. Its totient is φ = 1025808812.

The previous prime is 2051617619. The next prime is 2051617643. The reversal of 2051617628 is 8267161502.

It is a junction number, because it is equal to n+sod(n) for n = 2051617591 and 2051617600.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256452200 + ... + 256452207.

It is an arithmetic number, because the mean of its divisors is an integer number (598388476).

Almost surely, 2^2051617628 is an apocalyptic number.

It is an amenable number.

2051617628 is a deficient number, since it is larger than the sum of its proper divisors (1538713228).

2051617628 is a wasteful number, since it uses less digits than its factorization.

2051617628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512904411 (or 512904409 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 2051617628 is about 45294.7858809378. The cubic root of 2051617628 is about 1270.6681395577.

The spelling of 2051617628 in words is "two billion, fifty-one million, six hundred seventeen thousand, six hundred twenty-eight".