1810252845 has 12 divisors (see below), whose sum is σ = 3137771676. Its totient is φ = 965468160.

The previous prime is 1810252841. The next prime is 1810252853. The reversal of 1810252845 is 5482520181.

It can be written as a sum of positive squares in 2 ways, for example, as 748405449 + 1061847396 = 27357^2 + 32586^2 .

It is not a de Polignac number, because 1810252845 - 2² = 1810252841 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1810252841) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20113876 + ... + 20113965.

It is an arithmetic number, because the mean of its divisors is an integer number (261480973).

Almost surely, 2^1810252845 is an apocalyptic number.

1810252845 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1810252845 is a deficient number, since it is larger than the sum of its proper divisors (1327518831).

1810252845 is a wasteful number, since it uses less digits than its factorization.

1810252845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40227852 (or 40227849 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 36.

The square root of 1810252845 is about 42547.0662325853. The cubic root of 1810252845 is about 1218.7456526867.

The spelling of 1810252845 in words is "one billion, eight hundred ten million, two hundred fifty-two thousand, eight hundred forty-five".