612378383 has 4 divisors (see below), whose sum is σ = 613325520. Its totient is φ = 611431248.

The previous prime is 612378373. The next prime is 612378397. The reversal of 612378383 is 383873216.

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

It is a cyclic number.

It is not a de Polignac number, because 612378383 - 2²⁶ = 545269519 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 612378383.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (612378353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 472598 + ... + 473891.

It is an arithmetic number, because the mean of its divisors is an integer number (153331380).

Almost surely, 2^612378383 is an apocalyptic number.

612378383 is a deficient number, since it is larger than the sum of its proper divisors (947137).

612378383 is an equidigital number, since it uses as much as digits as its factorization.

612378383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 947136.

The product of its digits is 145152, while the sum is 41.

The square root of 612378383 is about 24746.2801851107. The cubic root of 612378383 is about 849.1934138605.

The spelling of 612378383 in words is "six hundred twelve million, three hundred seventy-eight thousand, three hundred eighty-three".