1807490749 has 4 divisors (see below), whose sum is σ = 1811608480. Its totient is φ = 1803373020.

The previous prime is 1807490723. The next prime is 1807490753. The reversal of 1807490749 is 9470947081.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1807490749 - 2⁷ = 1807490621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1807490149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2058207 + ... + 2059084.

It is an arithmetic number, because the mean of its divisors is an integer number (452902120).

Almost surely, 2^1807490749 is an apocalyptic number.

It is an amenable number.

1807490749 is a deficient number, since it is larger than the sum of its proper divisors (4117731).

1807490749 is an equidigital number, since it uses as much as digits as its factorization.

1807490749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4117730.

The product of its (nonzero) digits is 508032, while the sum is 49.

The square root of 1807490749 is about 42514.5945411690. The cubic root of 1807490749 is about 1218.1254803797.

The spelling of 1807490749 in words is "one billion, eight hundred seven million, four hundred ninety thousand, seven hundred forty-nine".