1791943680 has 88 divisors (see below), whose sum is σ = 5731468992. Its totient is φ = 477847552.

The previous prime is 1791943661. The next prime is 1791943721. The reversal of 1791943680 is 863491971.

It is a happy number.

It is a super-2 number, since 2×1791943680² = 6422124304583884800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42972 + ... + 73691.

Almost surely, 2^1791943680 is an apocalyptic number.

1791943680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1791943680 is an abundant number, since it is smaller than the sum of its proper divisors (3939525312).

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

1791943680 is a wasteful number, since it uses less digits than its factorization.

1791943680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116691 (or 116673 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 48.

The square root of 1791943680 is about 42331.3557543342. The cubic root of 1791943680 is about 1214.6228638632.

The spelling of 1791943680 in words is "one billion, seven hundred ninety-one million, nine hundred forty-three thousand, six hundred eighty".