1851034990 has 32 divisors (see below), whose sum is σ = 3810317760. Its totient is φ = 634228224.

The previous prime is 1851034961. The next prime is 1851035003. The reversal of 1851034990 is 994301581.

It is a congruent number.

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, 111894 + ... + 127366.

It is an arithmetic number, because the mean of its divisors is an integer number (119072430).

Almost surely, 2^1851034990 is an apocalyptic number.

1851034990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1851034990 is an abundant number, since it is smaller than the sum of its proper divisors (1959282770).

1851034990 is a wasteful number, since it uses less digits than its factorization.

1851034990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17196.

The product of its (nonzero) digits is 38880, while the sum is 40.

The square root of 1851034990 is about 43023.6561672762. The cubic root of 1851034990 is about 1227.8299123040.

The spelling of 1851034990 in words is "one billion, eight hundred fifty-one million, thirty-four thousand, nine hundred ninety".