1817490672 has 60 divisors (see below), whose sum is σ = 5385659760. Its totient is φ = 570192384.

The previous prime is 1817490671. The next prime is 1817490683. The reversal of 1817490672 is 2760947181.

It is a happy number.

It is a super-3 number, since 3×1817490672³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1817490671) 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, 368772 + ... + 373667.

It is an arithmetic number, because the mean of its divisors is an integer number (89760996).

Almost surely, 2^1817490672 is an apocalyptic number.

1817490672 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1817490672 is an abundant number, since it is smaller than the sum of its proper divisors (3568169088).

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

1817490672 is a wasteful number, since it uses less digits than its factorization.

1817490672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 742470 (or 742461 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 45.

The square root of 1817490672 is about 42632.0380934339. The cubic root of 1817490672 is about 1220.3677723084.

The spelling of 1817490672 in words is "one billion, eight hundred seventeen million, four hundred ninety thousand, six hundred seventy-two".