1423659780 has 48 divisors (see below), whose sum is σ = 4429165440. Its totient is φ = 379642464.

The previous prime is 1423659763. The next prime is 1423659799. The reversal of 1423659780 is 879563241.

1423659780 is a `hidden beast` number, since 1 + 423 + 65 + 97 + 80 = 666.

1423659780 is digitally balanced in base 10, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

1423659780 is strictly pandigital in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1317664 + ... + 1318743.

It is an arithmetic number, because the mean of its divisors is an integer number (92274280).

It is a 2-persistent number, because it is pandigital, and so is 2⋅1423659780 = 2847319560, but 3⋅1423659780 = 4270979340 is not.

Almost surely, 2^1423659780 is an apocalyptic number.

1423659780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1423659780 is an abundant number, since it is smaller than the sum of its proper divisors (3005505660).

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

1423659780 is a wasteful number, since it uses less digits than its factorization.

1423659780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2636425 (or 2636417 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The square root of 1423659780 is about 37731.4163529545. The cubic root of 1423659780 is about 1124.9556604747.

The spelling of 1423659780 in words is "one billion, four hundred twenty-three million, six hundred fifty-nine thousand, seven hundred eighty".