1971411028 has 12 divisors (see below), whose sum is σ = 3451567840. Its totient is φ = 985248792.

The previous prime is 1971411019. The next prime is 1971411031. The reversal of 1971411028 is 8201141791.

It is a super-2 number, since 2×1971411028² = 7772922882640033568, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1971410984 and 1971411002.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104376 + ... + 121807.

Almost surely, 2^1971411028 is an apocalyptic number.

It is an amenable number.

1971411028 is a deficient number, since it is larger than the sum of its proper divisors (1480156812).

1971411028 is a wasteful number, since it uses less digits than its factorization.

1971411028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228366 (or 228364 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 34.

The square root of 1971411028 is about 44400.5746359211. The cubic root of 1971411028 is about 1253.8889078760. Note that the first 3 decimals are identical.

The spelling of 1971411028 in words is "one billion, nine hundred seventy-one million, four hundred eleven thousand, twenty-eight".