1870221616 has 10 divisors (see below), whose sum is σ = 3623554412. Its totient is φ = 935110800.

The previous prime is 1870221607. The next prime is 1870221641. The reversal of 1870221616 is 6161220781.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58444410 + ... + 58444441.

Almost surely, 2^1870221616 is an apocalyptic number.

1870221616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1870221616 is a deficient number, since it is larger than the sum of its proper divisors (1753332796).

1870221616 is a wasteful number, since it uses less digits than its factorization.

1870221616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116888859 (or 116888853 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 1870221616 is about 43246.0589649508. The cubic root of 1870221616 is about 1232.0576342015.

The spelling of 1870221616 in words is "one billion, eight hundred seventy million, two hundred twenty-one thousand, six hundred sixteen".