1805749564 has 6 divisors (see below), whose sum is σ = 3160061744. Its totient is φ = 902874780.

The previous prime is 1805749553. The next prime is 1805749567. The reversal of 1805749564 is 4659475081.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1805749567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225718692 + ... + 225718699.

Almost surely, 2^1805749564 is an apocalyptic number.

It is an amenable number.

1805749564 is a deficient number, since it is larger than the sum of its proper divisors (1354312180).

1805749564 is a wasteful number, since it uses less digits than its factorization.

1805749564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451437395 (or 451437393 counting only the distinct ones).

The product of its (nonzero) digits is 1209600, while the sum is 49.

The square root of 1805749564 is about 42494.1121097970. The cubic root of 1805749564 is about 1217.7342080705.

The spelling of 1805749564 in words is "one billion, eight hundred five million, seven hundred forty-nine thousand, five hundred sixty-four".