1809465072 has 40 divisors (see below), whose sum is σ = 4730780544. Its totient is φ = 595886784.

The previous prime is 1809465043. The next prime is 1809465101. The reversal of 1809465072 is 2705649081.

It is an interprime number because it is at equal distance from previous prime (1809465043) and next prime (1809465101).

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 7 ways as a sum of consecutive naturals, for example, 223108 + ... + 231075.

Almost surely, 2^1809465072 is an apocalyptic number.

1809465072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1809465072 is an abundant number, since it is smaller than the sum of its proper divisors (2921315472).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1809465072 is a wasteful number, since it uses less digits than its factorization.

1809465072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454277 (or 454271 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 42.

The square root of 1809465072 is about 42537.8075598637. The cubic root of 1809465072 is about 1218.5688386715.

The spelling of 1809465072 in words is "one billion, eight hundred nine million, four hundred sixty-five thousand, seventy-two".