1021900850 has 24 divisors (see below), whose sum is σ = 1902253248. Its totient is φ = 408434000.

The previous prime is 1021900849. The next prime is 1021900871. The reversal of 1021900850 is 580091201.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 60875 + ... + 75825.

It is an arithmetic number, because the mean of its divisors is an integer number (79260552).

Almost surely, 2^1021900850 is an apocalyptic number.

1021900850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1021900850 is a deficient number, since it is larger than the sum of its proper divisors (880352398).

1021900850 is a wasteful number, since it uses less digits than its factorization.

1021900850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16330 (or 16325 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 26.

The square root of 1021900850 is about 31967.1839547996. The cubic root of 1021900850 is about 1007.2476283157.

The spelling of 1021900850 in words is "one billion, twenty-one million, nine hundred thousand, eight hundred fifty".