1924020890 has 32 divisors (see below), whose sum is σ = 3899957760. Its totient is φ = 677073600.

The previous prime is 1924020887. The next prime is 1924020913. The reversal of 1924020890 is 980204291.

It is a self number, because there is not a number n which added to its sum of digits gives 1924020890.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 278705 + ... + 285524.

It is an arithmetic number, because the mean of its divisors is an integer number (121873680).

Almost surely, 2^1924020890 is an apocalyptic number.

1924020890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1924020890 is an abundant number, since it is smaller than the sum of its proper divisors (1975936870).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1924020890 is a wasteful number, since it uses less digits than its factorization.

1924020890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564278.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 1924020890 is about 43863.6625237793. The cubic root of 1924020890 is about 1243.7600252047.

The spelling of 1924020890 in words is "one billion, nine hundred twenty-four million, twenty thousand, eight hundred ninety".