1813893045 has 64 divisors (see below), whose sum is σ = 3208826880. Its totient is φ = 870870528.

The previous prime is 1813893031. The next prime is 1813893101. The reversal of 1813893045 is 5403983181.

It is not a de Polignac number, because 1813893045 - 2⁶ = 1813892981 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1813892988 and 1813893006.

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 63 ways as a sum of consecutive naturals, for example, 1093857 + ... + 1095513.

It is an arithmetic number, because the mean of its divisors is an integer number (50137920).

Almost surely, 2^1813893045 is an apocalyptic number.

1813893045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1813893045 is a deficient number, since it is larger than the sum of its proper divisors (1394933835).

1813893045 is a wasteful number, since it uses less digits than its factorization.

1813893045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1874.

The product of its (nonzero) digits is 103680, while the sum is 42.

The square root of 1813893045 is about 42589.8232562663. The cubic root of 1813893045 is about 1219.5620225314.

The spelling of 1813893045 in words is "one billion, eight hundred thirteen million, eight hundred ninety-three thousand, forty-five".