1781430112 has 48 divisors (see below), whose sum is σ = 4372607232. Its totient is φ = 694062720.

The previous prime is 1781430107. The next prime is 1781430113. The reversal of 1781430112 is 2110341871.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1781430113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 359028 + ... + 363955.

It is an arithmetic number, because the mean of its divisors is an integer number (91095984).

Almost surely, 2^1781430112 is an apocalyptic number.

It is an amenable number.

1781430112 is an abundant number, since it is smaller than the sum of its proper divisors (2591177120).

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

1781430112 is a wasteful number, since it uses less digits than its factorization.

1781430112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 723011 (or 723003 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 28.

The square root of 1781430112 is about 42206.9912692198. The cubic root of 1781430112 is about 1212.2427525534.

Adding to 1781430112 its reverse (2110341871), we get a palindrome (3891771983).

The spelling of 1781430112 in words is "one billion, seven hundred eighty-one million, four hundred thirty thousand, one hundred twelve".