1790890812 has 18 divisors (see below), whose sum is σ = 4526974088. Its totient is φ = 596963592.

The previous prime is 1790890807. The next prime is 1790890859. The reversal of 1790890812 is 2180980971.

It is a tau number, because it is divible by the number of its divisors (18).

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 5 ways as a sum of consecutive naturals, for example, 24873448 + ... + 24873519.

Almost surely, 2^1790890812 is an apocalyptic number.

1790890812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1790890812 is an abundant number, since it is smaller than the sum of its proper divisors (2736083276).

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

1790890812 is a wasteful number, since it uses less digits than its factorization.

1790890812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49746977 (or 49746972 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 45.

The square root of 1790890812 is about 42318.9178973187. The cubic root of 1790890812 is about 1214.3849307732.

The spelling of 1790890812 in words is "one billion, seven hundred ninety million, eight hundred ninety thousand, eight hundred twelve".