1951828990 has 32 divisors (see below), whose sum is σ = 3881701440. Its totient is φ = 702856704.

The previous prime is 1951828987. The next prime is 1951829003. The reversal of 1951828990 is 998281591.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 245685 + ... + 253504.

It is an arithmetic number, because the mean of its divisors is an integer number (121303170).

Almost surely, 2^1951828990 is an apocalyptic number.

1951828990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1951828990 is a deficient number, since it is larger than the sum of its proper divisors (1929872450).

1951828990 is a wasteful number, since it uses less digits than its factorization.

1951828990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499236.

The product of its (nonzero) digits is 466560, while the sum is 52.

The square root of 1951828990 is about 44179.5087116188. The cubic root of 1951828990 is about 1249.7234566902.

The spelling of 1951828990 in words is "one billion, nine hundred fifty-one million, eight hundred twenty-eight thousand, nine hundred ninety".