2101628458 has 4 divisors (see below), whose sum is σ = 3152442690. Its totient is φ = 1050814228.

The previous prime is 2101628447. The next prime is 2101628509. The reversal of 2101628458 is 8548261012.

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

It can be written as a sum of positive squares in only one way, i.e., 1938376729 + 163251729 = 44027^2 + 12777^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 525407113 + ... + 525407116.

Almost surely, 2^2101628458 is an apocalyptic number.

2101628458 is a deficient number, since it is larger than the sum of its proper divisors (1050814232).

2101628458 is a wasteful number, since it uses less digits than its factorization.

2101628458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1050814231.

The product of its (nonzero) digits is 30720, while the sum is 37.

The square root of 2101628458 is about 45843.5214397847. The cubic root of 2101628458 is about 1280.9100904765.

The spelling of 2101628458 in words is "two billion, one hundred one million, six hundred twenty-eight thousand, four hundred fifty-eight".