1780572323 has 4 divisors (see below), whose sum is σ = 1780918200. Its totient is φ = 1780226448.

The previous prime is 1780572317. The next prime is 1780572373. The reversal of 1780572323 is 3232750871.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1780572323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1780572373) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 165098 + ... + 175551.

It is an arithmetic number, because the mean of its divisors is an integer number (445229550).

Almost surely, 2^1780572323 is an apocalyptic number.

1780572323 is a deficient number, since it is larger than the sum of its proper divisors (345877).

1780572323 is an equidigital number, since it uses as much as digits as its factorization.

1780572323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345876.

The product of its (nonzero) digits is 70560, while the sum is 38.

The square root of 1780572323 is about 42196.8283523774. The cubic root of 1780572323 is about 1212.0481494575.

The spelling of 1780572323 in words is "one billion, seven hundred eighty million, five hundred seventy-two thousand, three hundred twenty-three".